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<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2021-03-05T00:44:12.4505164+00:00 -->
<!-- Version            : 5.0.1.571 -->
<!-- Package ID         : d5e5b1acdf274566a51c96e0227f49b8 -->
<!-- Copyright (c) 2021 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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    <link:loc xlink:href="unit-20201231.xsd#unit_IntangibleLiabilitiesNet" xlink:type="locator" xlink:label="unit_IntangibleLiabilitiesNet" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_FinanceLeaseLiabilityExcludingFinanceLeaseObligationsInHeldForSale" xlink:type="locator" xlink:label="unit_FinanceLeaseLiabilityExcludingFinanceLeaseObligationsInHeldForSale" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_CashDistributionsAndLossesInExcessOfInvestmentsInSubsidiaries" xlink:type="locator" xlink:label="unit_CashDistributionsAndLossesInExcessOfInvestmentsInSubsidiaries" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_ProceedsFromSaleOfUnitiFiberMidwestOperations" xlink:type="locator" xlink:label="unit_ProceedsFromSaleOfUnitiFiberMidwestOperations" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_ProceedsFromIssuanceOfStockNetOfIssuanceCosts" xlink:type="locator" xlink:label="unit_ProceedsFromIssuanceOfStockNetOfIssuanceCosts" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_IntercompanyTransactionsNet" xlink:type="locator" xlink:label="unit_IntercompanyTransactionsNet" />
    <link:label xml:lang="en-US" xlink:label="unit_IntercompanyTransactionsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Intercompany transactions net.</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Document Period End Date</link:label>
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntitySmallBusiness" xlink:type="locator" xlink:label="dei_EntitySmallBusiness" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, plant and equipment, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash And Cash Equivalents At Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsReceivableNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts receivable, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableNet" xlink:to="us-gaap_AccountsReceivableNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsReceivableNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill" xlink:type="locator" xlink:label="us-gaap_Goodwill" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Goodwill" xlink:to="us-gaap_Goodwill_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:type="locator" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible assets, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Assets Net Excluding Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredRentReceivablesNet" xlink:type="locator" xlink:label="us-gaap_DeferredRentReceivablesNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRentReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Straight-line revenue receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRentReceivablesNet" xlink:to="us-gaap_DeferredRentReceivablesNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRentReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Rent Receivables Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssets" xlink:type="locator" xlink:label="us-gaap_OtherAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssets" xlink:to="us-gaap_OtherAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:type="locator" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments in unconsolidated entities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:to="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Investments In Affiliates Subsidiaries Associates And Joint Ventures</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup" xlink:type="locator" xlink:label="us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets held for sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup" xlink:to="us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets Held For Sale Not Part Of Disposal Group</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets" xlink:type="locator" xlink:label="us-gaap_Assets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities and Shareholders&apos; Deficit:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities And Stockholders Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="us-gaap_LiabilitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableAndOtherAccruedLiabilities" xlink:type="locator" xlink:label="us-gaap_AccountsPayableAndOtherAccruedLiabilities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableAndOtherAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable, accrued expenses and other liabilities, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndOtherAccruedLiabilities" xlink:to="us-gaap_AccountsPayableAndOtherAccruedLiabilities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableAndOtherAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable And Other Accrued Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SettlementPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement payable (Note 17)</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SettlementPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Settlement Payable</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible liabilities, net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Liabilities Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestPayableCurrentAndNoncurrent" xlink:type="locator" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrentAndNoncurrent" xlink:to="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Payable Current And Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredRevenue" xlink:type="locator" xlink:label="us-gaap_DeferredRevenue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRevenue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenue" xlink:to="us-gaap_DeferredRevenue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRevenue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:type="locator" xlink:label="us-gaap_DerivativeLiabilities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative liability, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilities" xlink:to="us-gaap_DerivativeLiabilities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:type="locator" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:to="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable Current And Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:to="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Liabilities Net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseLiabilityExcludingFinanceLeaseObligationsInHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Finance lease obligations</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseLiabilityExcludingFinanceLeaseObligationsInHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Excluding Finance Lease Obligations In Held For Sale</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contingent consideration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationContingentConsiderationLiability" xlink:to="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt" xlink:type="locator" xlink:label="us-gaap_LongTermDebt" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes and other debt, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:type="locator" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities held for sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:to="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Of Disposal Group Including Discontinued Operation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities" xlink:type="locator" xlink:label="us-gaap_Liabilities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Liabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Liabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and contingencies (Note 17)</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shareholders&apos; Deficit:</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:type="locator" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated other comprehensive loss</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDistributionsInExcessOfNetIncome" xlink:type="locator" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncome" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Distributions in excess of accumulated earnings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDistributionsInExcessOfNetIncome" xlink:to="us-gaap_AccumulatedDistributionsInExcessOfNetIncome_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Distributions In Excess Of Net Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity" xlink:type="locator" xlink:label="us-gaap_StockholdersEquity" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Uniti shareholders&apos; deficit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestAbstract" xlink:type="locator" xlink:label="us-gaap_MinorityInterestAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling interests:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestAbstract" xlink:to="us-gaap_MinorityInterestAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minority Interest [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestInOperatingPartnerships" xlink:type="locator" xlink:label="us-gaap_MinorityInterestInOperatingPartnerships" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestInOperatingPartnerships_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating partnership units</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_NonControllingInterestInCumulativeNonVotingNotMandatorilyRedeemableConvertiblePreferredStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative non-voting convertible preferred stock, $0.01 par value, 3 shares authorized, 1 issued and outstanding</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NonControllingInterestInCumulativeNonVotingNotMandatorilyRedeemableConvertiblePreferredStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Non Controlling Interest In Cumulative Non Voting Not Mandatorily Redeemable Convertible Preferred Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total shareholders&apos; deficit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity Including Portion Attributable To Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities and Shareholders&apos; Deficit</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_CumulativeNonVotingConvertiblePreferredSharesAuthorized" xlink:type="locator" xlink:label="unit_CumulativeNonVotingConvertiblePreferredSharesAuthorized" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:type="locator" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Par Or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_PreferredStockSharesAuthorized" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares outstanding</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_CumulativeNonVotingConvertiblePreferredSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative non-voting convertible preferred shares issued</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CumulativeNonVotingConvertiblePreferredSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Non Voting Convertible Preferred Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CumulativeNonVotingConvertiblePreferredSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative non-voting convertible preferred shares outstanding</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CumulativeNonVotingConvertiblePreferredSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Non Voting Convertible Preferred Shares Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeStatementAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:type="locator" xlink:label="us-gaap_StatementTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_StatementBusinessSegmentsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Business Segments [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_SegmentDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LeasingMember" xlink:type="locator" xlink:label="unit_LeasingMember" />
    <link:label xml:lang="en-US" xlink:label="unit_LeasingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Leasing.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LeasingMember" xlink:to="unit_LeasingMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_LeasingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leasing</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LeasingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leasing [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FiberInfrastructureMember" xlink:type="locator" xlink:label="unit_FiberInfrastructureMember" />
    <link:label xml:lang="en-US" xlink:label="unit_FiberInfrastructureMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Fiber infrastructure.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FiberInfrastructureMember" xlink:to="unit_FiberInfrastructureMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_FiberInfrastructureMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fiber Infrastructure</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiberInfrastructureMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fiber Infrastructure [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_TowerSegmentMember" xlink:type="locator" xlink:label="unit_TowerSegmentMember" />
    <link:label xml:lang="en-US" xlink:label="unit_TowerSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Tower segment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_TowerSegmentMember" xlink:to="unit_TowerSegmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_TowerSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tower</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_TowerSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Tower Segment [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ConsumerCLECSegmentMember" xlink:type="locator" xlink:label="unit_ConsumerCLECSegmentMember" />
    <link:label xml:lang="en-US" xlink:label="unit_ConsumerCLECSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Consumer CLEC segment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ConsumerCLECSegmentMember" xlink:to="unit_ConsumerCLECSegmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ConsumerCLECSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consumer CLEC</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ConsumerCLECSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Consumer C L E C Segment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:type="locator" xlink:label="us-gaap_StatementLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenuesAbstract" xlink:type="locator" xlink:label="us-gaap_RevenuesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenues:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenues [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Revenues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total revenues</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Revenues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsAndExpensesAbstract" xlink:type="locator" xlink:label="us-gaap_CostsAndExpensesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Costs and Expenses:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_CostsAndExpensesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Costs And Expenses [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:type="locator" xlink:label="us-gaap_InterestIncomeExpenseNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest expense, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeExpenseNet" xlink:to="us-gaap_InterestIncomeExpenseNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income Expense Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:type="locator" xlink:label="us-gaap_DepreciationAndAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation and amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationAndAmortization" xlink:to="us-gaap_DepreciationAndAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation And Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:type="locator" xlink:label="us-gaap_GeneralAndAdministrativeExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and administrative expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">General And Administrative Expense</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_OperatingExpenseExclusiveOfDepreciationAccretionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating expense (exclusive of depreciation, accretion and amortization)</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_OperatingExpenseExclusiveOfDepreciationAccretionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expense Exclusive Of Depreciation Accretion And Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LitigationSettlementExpense" xlink:type="locator" xlink:label="us-gaap_LitigationSettlementExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LitigationSettlementExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement expense (Note 17)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LitigationSettlementExpense" xlink:to="us-gaap_LitigationSettlementExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LitigationSettlementExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Settlement Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:type="locator" xlink:label="us-gaap_GoodwillImpairmentLoss" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillImpairmentLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill impairment (Note 3)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillImpairmentLoss" xlink:to="us-gaap_GoodwillImpairmentLoss_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillImpairmentLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Impairment Loss</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_TransactionRelatedAndOtherCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transaction related and other costs</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_TransactionRelatedAndOtherCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Transaction Related And Other Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnSalesOfInvestmentRealEstate" xlink:type="locator" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on sale of real estate (Note 6)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate" xlink:to="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Gains Losses On Sales Of Investment Real Estate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherOperatingIncomeExpenseNet" xlink:type="locator" xlink:label="us-gaap_OtherOperatingIncomeExpenseNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherOperatingIncomeExpenseNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other (income) expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherOperatingIncomeExpenseNet" xlink:to="us-gaap_OtherOperatingIncomeExpenseNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherOperatingIncomeExpenseNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Operating Income Expense Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsAndExpenses" xlink:type="locator" xlink:label="us-gaap_CostsAndExpenses" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total costs and expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_CostsAndExpenses_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Costs And Expenses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">(Loss) income before income taxes and equity in earnings (loss) from unconsolidated entities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income tax (benefit) expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense Benefit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity in earnings (loss) from unconsolidated entities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromEquityMethodInvestments" xlink:to="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Loss From Equity Method Investments</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_CumulativeNonVotingConvertiblePreferredStock" xlink:type="locator" xlink:label="unit_CumulativeNonVotingConvertiblePreferredStock" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationValue" xlink:type="locator" xlink:label="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationValue" />
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issued during period settlement of contingent consideration, value.</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_AdjustmentsToAdditionalPaidInCapitalSaleOfCommonStockWarrant" xlink:type="locator" xlink:label="unit_AdjustmentsToAdditionalPaidInCapitalSaleOfCommonStockWarrant" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_AdjustmentsToAdditionalPaidPaymentForBondHedgeOption" xlink:type="locator" xlink:label="unit_AdjustmentsToAdditionalPaidPaymentForBondHedgeOption" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_CommonStockIssuedDuringPeriodRelatedToSettlementOfLitigation" xlink:type="locator" xlink:label="unit_CommonStockIssuedDuringPeriodRelatedToSettlementOfLitigation" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockIssuedDuringPeriodRelatedToSettlementOfLitigation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock issued during period related to settlement of litigation.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Of Stockholders Equity [Abstract]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementEquityComponentsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interest - Non-voting Preferred Shares</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Equity Components [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:type="locator" xlink:label="us-gaap_EquityComponentDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Component</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Equity Component [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockMember" xlink:type="locator" xlink:label="us-gaap_PreferredStockMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockMember" xlink:to="us-gaap_PreferredStockMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember" xlink:type="locator" xlink:label="us-gaap_CommonStockMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:type="locator" xlink:label="us-gaap_AdditionalPaidInCapitalMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional Paid-in Capital</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid In Capital [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive (Loss) Income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributions in Excess of Accumulated Earnings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:to="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Distributions In Excess Of Net Income [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_NoncontrollingInterestMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interest - OP Units</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncontrollingInterestMember" xlink:to="us-gaap_NoncontrollingInterestMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_NoncontrollingInterestNoncontrollingInterestNonVotingPreferredSharesMember" xlink:type="locator" xlink:label="unit_NoncontrollingInterestNoncontrollingInterestNonVotingPreferredSharesMember" />
    <link:label xml:lang="en-US" xlink:label="unit_NoncontrollingInterestNoncontrollingInterestNonVotingPreferredSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Noncontrolling interest noncontrolling interest - non-voting preferred shares.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NoncontrollingInterestNoncontrollingInterestNonVotingPreferredSharesMember" xlink:to="unit_NoncontrollingInterestNoncontrollingInterestNonVotingPreferredSharesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_NoncontrollingInterestNoncontrollingInterestNonVotingPreferredSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interest - Non-voting Preferred Shares</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NoncontrollingInterestNoncontrollingInterestNonVotingPreferredSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest Noncontrolling Interest Non Voting Preferred Shares [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis" xlink:type="locator" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative Effect, Period of Adoption</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CumulativeEffectPeriodOfAdoptionAxis" xlink:to="srt_CumulativeEffectPeriodOfAdoptionAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect Period Of Adoption [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain" xlink:type="locator" xlink:label="srt_CumulativeEffectPeriodOfAdoptionDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_CumulativeEffectPeriodOfAdoptionDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative Effect, Period of Adoption</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CumulativeEffectPeriodOfAdoptionDomain" xlink:to="srt_CumulativeEffectPeriodOfAdoptionDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_CumulativeEffectPeriodOfAdoptionDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect Period Of Adoption [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember" xlink:type="locator" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember" />
    <link:label xml:lang="en-US" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative Effect Adjustment for Adoption of New Accounting Standard</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember" xlink:to="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect Period Of Adoption Adjustment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance, value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharesOutstanding" xlink:type="locator" xlink:label="us-gaap_SharesOutstanding" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance, shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Shares Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdateExtensibleList" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdateExtensibleList" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdateExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Update [Extensible List]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdateExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update Extensible List</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProfitLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net (loss) income</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodValueAtMarketNetOfOfferingCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">At-the-market issuance of common stock, net of offering costs</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodValueAtMarketNetOfOfferingCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value At Market Net Of Offering Costs</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodSharesAtMarketNetOfOfferingCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">At-the-market issuance of common stock, net of offering, shares</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodSharesAtMarketNetOfOfferingCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares At Market Net Of Offering Costs</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustmentToAdditionalPaidInCapitalDueToAmortizationOfDiscountOnConvertiblePreferredStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Amortization of discount on convertible preferred stock</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustmentToAdditionalPaidInCapitalDueToAmortizationOfDiscountOnConvertiblePreferredStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment To Additional Paid In Capital Due To Amortization Of Discount On Convertible Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other comprehensive income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsCommonStock" xlink:type="locator" xlink:label="us-gaap_DividendsCommonStock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Common stock dividends declared</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsCommonStock" xlink:to="us-gaap_DividendsCommonStock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:type="locator" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Distributions to noncontrolling interest</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minority Interest Decrease From Distributions To Noncontrolling Interest Holders</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:type="locator" xlink:label="us-gaap_MinorityInterestDecreaseFromRedemptions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exchange of noncontrolling interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:to="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_ExchangeOfNoncontrollingInterestShares" xlink:type="locator" xlink:label="unit_ExchangeOfNoncontrollingInterestShares" />
    <link:label xml:lang="en-US" xlink:label="unit_ExchangeOfNoncontrollingInterestShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Exchange of noncontrolling interest, shares.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ExchangeOfNoncontrollingInterestShares" xlink:to="unit_ExchangeOfNoncontrollingInterestShares_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ExchangeOfNoncontrollingInterestShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exchange of noncontrolling interest, shares</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ExchangeOfNoncontrollingInterestShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Exchange Of Noncontrolling Interest Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Convertible preferred stock dividends</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity settlement convertible preferred stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xlink:to="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Conversion Of Convertible Securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity settlement convertible preferred stock, shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:to="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares Conversion Of Convertible Securities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CumulativeNonVotingConvertiblePreferredStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative non-voting convertible preferred stock</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CumulativeNonVotingConvertiblePreferredStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Non Voting Convertible Preferred Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net share settlement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:to="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments Related To Tax Withholding For Share Based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation, shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares Share Based Compensation</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity settled contingent consideration</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Settlement Of Contingent Consideration Value</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationShare" xlink:type="locator" xlink:label="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationShare" />
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issued during period settlement of contingent consideration, share.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationShare" xlink:to="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationShare_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity settled contingent consideration, in shares</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockIssuedDuringPeriodSettlementOfContingentConsiderationShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Settlement Of Contingent Consideration Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock - employee stock purchase plan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:to="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Employee Stock Purchase Plan</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock - employee stock purchase plan, in shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans" xlink:to="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares Employee Stock Purchase Plans</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity component value of exchangeable note issuance, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" xlink:to="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Conversion Of Convertible Securities Net Of Adjustments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax liability related to exchangeable note issuance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustmentsToAdditionalPaidInCapitalSaleOfCommonStockWarrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of common stock warrant</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustmentsToAdditionalPaidInCapitalSaleOfCommonStockWarrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Additional Paid In Capital Sale Of Common Stock Warrant</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustmentsToAdditionalPaidPaymentForBondHedgeOption_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment for bond hedge option</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustmentsToAdditionalPaidPaymentForBondHedgeOption_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Additional Paid Payment For Bond Hedge Option</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockIssuedDuringPeriodRelatedToSettlementOfLitigation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockIssuedDuringPeriodRelatedToSettlementOfLitigation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Issued During Period Related To Settlement Of Litigation</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CommonStockSharesIssuedDuringPeriodRelatedToSettlementOfLitigation" xlink:type="locator" xlink:label="unit_CommonStockSharesIssuedDuringPeriodRelatedToSettlementOfLitigation" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockSharesIssuedDuringPeriodRelatedToSettlementOfLitigation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock shares issued during period related to settlement of litigation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CommonStockSharesIssuedDuringPeriodRelatedToSettlementOfLitigation" xlink:to="unit_CommonStockSharesIssuedDuringPeriodRelatedToSettlementOfLitigation_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockSharesIssuedDuringPeriodRelatedToSettlementOfLitigation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement Common Stock, shares</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockSharesIssuedDuringPeriodRelatedToSettlementOfLitigation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Shares Issued During Period Related To Settlement Of Litigation</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance, value</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance, shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:type="locator" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock dividends declared per share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockDividendsPerShareDeclared" xlink:to="us-gaap_CommonStockDividendsPerShareDeclared_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Dividends Per Share Declared</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_InterestRateSwapTermination" xlink:type="locator" xlink:label="unit_InterestRateSwapTermination" />
    <link:label xml:lang="en-US" xlink:label="unit_InterestRateSwapTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap termination.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_InterestRateSwapTermination" xlink:to="unit_InterestRateSwapTermination_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_EquityMethodInvestmentDistributionsOfCumulativeEarnings" xlink:type="locator" xlink:label="unit_EquityMethodInvestmentDistributionsOfCumulativeEarnings" />
    <link:label xml:lang="en-US" xlink:label="unit_EquityMethodInvestmentDistributionsOfCumulativeEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity method investment distributions of cumulative earnings.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_EquityMethodInvestmentDistributionsOfCumulativeEarnings" xlink:to="unit_EquityMethodInvestmentDistributionsOfCumulativeEarnings_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_CashPaidForInterestRateSwapSettlement" xlink:type="locator" xlink:label="unit_CashPaidForInterestRateSwapSettlement" />
    <link:label xml:lang="en-US" xlink:label="unit_CashPaidForInterestRateSwapSettlement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash paid for interest rate swap settlement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CashPaidForInterestRateSwapSettlement" xlink:to="unit_CashPaidForInterestRateSwapSettlement_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_IncreaseDecreaseInDeferredRevenueFromPrepaidRentRelatedToAcquisition" xlink:type="locator" xlink:label="unit_IncreaseDecreaseInDeferredRevenueFromPrepaidRentRelatedToAcquisition" />
    <link:label xml:lang="en-US" xlink:label="unit_IncreaseDecreaseInDeferredRevenueFromPrepaidRentRelatedToAcquisition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase (decrease) in deferred revenue from prepaid rent related to acquisition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_IncreaseDecreaseInDeferredRevenueFromPrepaidRentRelatedToAcquisition" xlink:to="unit_IncreaseDecreaseInDeferredRevenueFromPrepaidRentRelatedToAcquisition_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_IncreaseDecreaseInSettlementPayable" xlink:type="locator" xlink:label="unit_IncreaseDecreaseInSettlementPayable" />
    <link:label xml:lang="en-US" xlink:label="unit_IncreaseDecreaseInSettlementPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in settlement payable.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_IncreaseDecreaseInSettlementPayable" xlink:to="unit_IncreaseDecreaseInSettlementPayable_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_TenantCapitalImprovements" xlink:type="locator" xlink:label="unit_TenantCapitalImprovements" />
    <link:label xml:lang="en-US" xlink:label="unit_TenantCapitalImprovements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Tenant capital improvements.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_TenantCapitalImprovements" xlink:to="unit_TenantCapitalImprovements_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_SettlementOfTemporaryEquity" xlink:type="locator" xlink:label="unit_SettlementOfTemporaryEquity" />
    <link:label xml:lang="en-US" xlink:label="unit_SettlementOfTemporaryEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Settlement of temporary equity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SettlementOfTemporaryEquity" xlink:to="unit_SettlementOfTemporaryEquity_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_SettlementOfContingentConsiderationThroughNonCashConsideration" xlink:type="locator" xlink:label="unit_SettlementOfContingentConsiderationThroughNonCashConsideration" />
    <link:label xml:lang="en-US" xlink:label="unit_SettlementOfContingentConsiderationThroughNonCashConsideration_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Settlement of contingent consideration through non-cash consideration.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SettlementOfContingentConsiderationThroughNonCashConsideration" xlink:to="unit_SettlementOfContingentConsiderationThroughNonCashConsideration_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition, Acquiree</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Acquiree [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_BluebirdNetworkLLCMember" xlink:type="locator" xlink:label="unit_BluebirdNetworkLLCMember" />
    <link:label xml:lang="en-US" xlink:label="unit_BluebirdNetworkLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Bluebird Network, LLC.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_BluebirdNetworkLLCMember" xlink:to="unit_BluebirdNetworkLLCMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_BluebirdNetworkLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bluebird Network, LLC</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_BluebirdNetworkLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Bluebird Network L L C [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_NetworkManagementHoldingsLTDMember" xlink:type="locator" xlink:label="unit_NetworkManagementHoldingsLTDMember" />
    <link:label xml:lang="en-US" xlink:label="unit_NetworkManagementHoldingsLTDMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Network Management Holdings LTD.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NetworkManagementHoldingsLTDMember" xlink:to="unit_NetworkManagementHoldingsLTDMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_NetworkManagementHoldingsLTDMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">NMS</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NetworkManagementHoldingsLTDMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Network Management Holdings L T D [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_WindstreamMember" xlink:type="locator" xlink:label="unit_WindstreamMember" />
    <link:label xml:lang="en-US" xlink:label="unit_WindstreamMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Windstream.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_WindstreamMember" xlink:to="unit_WindstreamMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_WindstreamMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Windstream</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_WindstreamMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Windstream [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flow from operating activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net income (loss) to net cash provided by operating activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:type="locator" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of deferred financing costs and debt discount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:to="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Financing Costs And Discounts</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:type="locator" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Write off of deferred financing costs and debt discount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:to="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Gains Losses On Extinguishment Of Debt</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_InterestRateSwapTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate swap termination</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_InterestRateSwapTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Termination</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Expense Benefit</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Equity in (earnings) loss of unconsolidated entities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EquityMethodInvestmentDistributionsOfCumulativeEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributions of cumulative earnings from unconsolidated entities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EquityMethodInvestmentDistributionsOfCumulativeEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investment Distributions Of Cumulative Earnings</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CashPaidForInterestRateSwapSettlement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for interest rate swap settlement</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CashPaidForInterestRateSwapSettlement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Paid For Interest Rate Swap Settlement</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StraightLineRent" xlink:type="locator" xlink:label="us-gaap_StraightLineRent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StraightLineRent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Straight-line rental revenues</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StraightLineRent" xlink:to="us-gaap_StraightLineRent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StraightLineRent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Straight Line Rent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value of contingent consideration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:to="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Gain on sale of real estate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfBusiness" xlink:type="locator" xlink:label="us-gaap_GainLossOnSaleOfBusiness" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossOnSaleOfBusiness_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on sale of Uniti Fiber Midwest operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfBusiness" xlink:to="us-gaap_GainLossOnSaleOfBusiness_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossOnSaleOfBusiness_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Gain Loss On Sale Of Business</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:type="locator" xlink:label="us-gaap_GainLossOnDispositionOfAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on asset disposal</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnDispositionOfAssets" xlink:to="us-gaap_GainLossOnDispositionOfAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Gain Loss On Disposition Of Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:type="locator" xlink:label="us-gaap_OtherNoncashIncomeExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNoncashIncomeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNoncashIncomeExpense" xlink:to="us-gaap_OtherNoncashIncomeExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNoncashIncomeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Noncash Income Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in assets and liabilities, net of acquisitions:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accounts receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Accounts Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Other Operating Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable, accrued expenses and other liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Accounts Payable And Accrued Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IncreaseDecreaseInDeferredRevenueFromPrepaidRentRelatedToAcquisition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred revenue from prepaid rent - Bluebird/Uniti Fiber Midwest networks (Note 6)</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IncreaseDecreaseInDeferredRevenueFromPrepaidRentRelatedToAcquisition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Deferred Revenue From Prepaid Rent Related To Acquisition</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IncreaseDecreaseInSettlementPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement payable (Note 17)</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flow from financing activities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfSeniorDebt" xlink:type="locator" xlink:label="us-gaap_RepaymentsOfSeniorDebt" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:type="locator" xlink:label="us-gaap_PaymentsOfDividendsCommonStock" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeasePrincipalPayments" xlink:type="locator" xlink:label="us-gaap_FinanceLeasePrincipalPayments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeasePrincipalPayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Finance lease payments</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:type="locator" xlink:label="us-gaap_PaymentsOfFinancingCosts" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForHedgeFinancingActivities" xlink:type="locator" xlink:label="us-gaap_PaymentsForHedgeFinancingActivities" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommitmentsAndContingenciesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies Policy [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_DebtPolicyTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Issuance Costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtPolicyTextBlock" xlink:to="us-gaap_DebtPolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Policy [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionPolicyTextBlock" xlink:to="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Recognition Policy [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_StraightLineRevenueReceivablePolicyTextBlock" xlink:type="locator" xlink:label="unit_StraightLineRevenueReceivablePolicyTextBlock" />
    <link:label xml:lang="en-US" xlink:label="unit_StraightLineRevenueReceivablePolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Straight-line revenue receivable.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_StraightLineRevenueReceivablePolicyTextBlock" xlink:to="unit_StraightLineRevenueReceivablePolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_StraightLineRevenueReceivablePolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Straight-Line Revenue Receivable</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StraightLineRevenueReceivablePolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Straight Line Revenue Receivable Policy [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LeasesPolicyTextBlock" xlink:type="locator" xlink:label="unit_LeasesPolicyTextBlock" />
    <link:label xml:lang="en-US" xlink:label="unit_LeasesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of accounting policy for leasing arrangement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LeasesPolicyTextBlock" xlink:to="unit_LeasesPolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_LeasesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LeasesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leases Policy [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-Based Compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Option And Incentive Plans Policy</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_IncomeTaxPolicyTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Policy [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsPolicy" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationsPolicy" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationsPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Combinations And Asset Acquisitions</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationsPolicy" xlink:to="us-gaap_BusinessCombinationsPolicy_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationsPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combinations Policy</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_NoncontrollingInterestPolicyTextblock" xlink:type="locator" xlink:label="unit_NoncontrollingInterestPolicyTextblock" />
    <link:label xml:lang="en-US" xlink:label="unit_NoncontrollingInterestPolicyTextblock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of accounting policy for noncontrolling interest.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NoncontrollingInterestPolicyTextblock" xlink:to="unit_NoncontrollingInterestPolicyTextblock_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_NoncontrollingInterestPolicyTextblock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NoncontrollingInterestPolicyTextblock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest Policy Textblock</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_InvestmentInUnconsolidatedEntityPolicyTextBlock" xlink:type="locator" xlink:label="unit_InvestmentInUnconsolidatedEntityPolicyTextBlock" />
    <link:label xml:lang="en-US" xlink:label="unit_InvestmentInUnconsolidatedEntityPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment in unconsolidated entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_InvestmentInUnconsolidatedEntityPolicyTextBlock" xlink:to="unit_InvestmentInUnconsolidatedEntityPolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_InvestmentInUnconsolidatedEntityPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments in Unconsolidated Entities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_InvestmentInUnconsolidatedEntityPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Investment In Unconsolidated Entity Policy [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:to="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill And Intangible Assets Policy [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share Policy [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskCreditRisk" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskCreditRisk" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskCreditRisk_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration of Credit Risks</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskCreditRisk" xlink:to="us-gaap_ConcentrationRiskCreditRisk_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskCreditRisk_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Credit Risk</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:type="locator" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassifications</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:to="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Prior Period Reclassification Adjustment Description</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recently Issued Accounting Standards</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements Policy Policy [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:type="locator" xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenues Disaggregated by Revenue Stream</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:to="us-gaap_DisaggregationOfRevenueTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation Of Revenue Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Contract Assets and Contract Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock" xlink:to="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Asset And Liability Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLeaseIncomeTableTextBlock" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Components of Lease Income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock" xlink:to="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Lease Income Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease Payments to be Received under Non-Cancellable Operating Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Payments To Be Received Maturity Table [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ScheduleOfLessorUnderlyingAssetForOperatingLeaseTableTextBlock" xlink:type="locator" xlink:label="unit_ScheduleOfLessorUnderlyingAssetForOperatingLeaseTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfLessorUnderlyingAssetForOperatingLeaseTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Lessor underlying asset for operating lease.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ScheduleOfLessorUnderlyingAssetForOperatingLeaseTableTextBlock" xlink:to="unit_ScheduleOfLessorUnderlyingAssetForOperatingLeaseTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfLessorUnderlyingAssetForOperatingLeaseTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Underlying Assets under Operating Leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfLessorUnderlyingAssetForOperatingLeaseTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Lessor Underlying Asset For Operating Lease Table [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ScheduleOfLessorDepreciationExpenseForUnderlyingAssetsForOperatingLeases" xlink:type="locator" xlink:label="unit_ScheduleOfLessorDepreciationExpenseForUnderlyingAssetsForOperatingLeases" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfLessorDepreciationExpenseForUnderlyingAssetsForOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of lessor depreciation expense for underlying assets for operating leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ScheduleOfLessorDepreciationExpenseForUnderlyingAssetsForOperatingLeases" xlink:to="unit_ScheduleOfLessorDepreciationExpenseForUnderlyingAssetsForOperatingLeases_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfLessorDepreciationExpenseForUnderlyingAssetsForOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Depreciation Expense for Underlying Assets under Operating Leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfLessorDepreciationExpenseForUnderlyingAssetsForOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Lessor Depreciation Expense For Underlying Assets For Operating Leases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseCostTableTextBlock" xlink:type="locator" xlink:label="us-gaap_LeaseCostTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Components of Lease Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCostTableTextBlock" xlink:to="us-gaap_LeaseCostTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Cost Table [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_SummaryOfLesseeAmountsReportedInCondensedConsolidatedBalanceSheetsForLeasesTableTextblock" xlink:type="locator" xlink:label="unit_SummaryOfLesseeAmountsReportedInCondensedConsolidatedBalanceSheetsForLeasesTableTextblock" />
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    <link:label xml:lang="en-US" xlink:label="unit_SummaryOfLesseeAmountsReportedInCondensedConsolidatedBalanceSheetsForLeasesTableTextblock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Amounts Reported in Consolidated Balance Sheets for Leases</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_ScheduleOfSupplementalCashFlowInformationRelatedToLeasesTableTextBlock" xlink:type="locator" xlink:label="unit_ScheduleOfSupplementalCashFlowInformationRelatedToLeasesTableTextBlock" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_ScheduleOfFutureLeasePaymentsUnderNonCancellableOperatingAndFinanceLeasesTableTextBlock" xlink:type="locator" xlink:label="unit_ScheduleOfFutureLeasePaymentsUnderNonCancellableOperatingAndFinanceLeasesTableTextBlock" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_ScheduleOfFutureMinimumSubleaseRentalTableTextBlock" xlink:type="locator" xlink:label="unit_ScheduleOfFutureMinimumSubleaseRentalTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfFutureMinimumSubleaseRentalTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of future minimum sublease rental.</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_BluebirdFiberNetworkMember" xlink:type="locator" xlink:label="unit_BluebirdFiberNetworkMember" />
    <link:label xml:lang="en-US" xlink:label="unit_BluebirdFiberNetworkMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Bluebird fiber network.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_BluebirdFiberNetworkMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bluebird Fiber Network</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_InformationTransportSolutionsIncMember" xlink:type="locator" xlink:label="unit_InformationTransportSolutionsIncMember" />
    <link:label xml:lang="en-US" xlink:label="unit_InformationTransportSolutionsIncMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Information Transport Solutions Inc.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_InformationTransportSolutionsIncMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Information Transport Solutions Inc [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionProFormaInformationTextBlock" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assets and Liabilities Classified as Held for Sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock" xlink:to="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Disposal Groups Including Discontinued Operations Income Statement Balance Sheet And Additional Disclosures [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:type="locator" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Roll Forward of Liability Measured at Fair Value on Recurring Basis Using Unobservable Inputs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Carrying Value of Property, Plant and Equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_OffsettingDerivativeAssetsAndLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="unit_OffsettingDerivativeAssetsAndLiabilitiesTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="unit_OffsettingDerivativeAssetsAndLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Offsetting derivative assets and liabilities.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_OffsettingDerivativeAssetsAndLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Gross Amount of Derivative Instruments Subject to Master Netting Arrangements With Same Counterparty</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_OffsettingDerivativeAssetsAndLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Offsetting Derivative Assets And Liabilities Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDerivativesInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDerivativesInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDerivativesInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Fair Value of Derivative Instruments and Presentation in Consolidated Balance Sheet</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfGoodwillTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfGoodwillTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Carrying Amount of Goodwill</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfGoodwillTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Goodwill [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ScheduleOfIntangibleAssetsTableTextBlock" xlink:type="locator" xlink:label="unit_ScheduleOfIntangibleAssetsTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIntangibleAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of intangible assets.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIntangibleAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Carrying Value of Other Intangible Assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIntangibleAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Intangible Assets Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Debt Instruments [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Aggregate Annual Maturities of Long-Term Obligations</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_PerformanceBasedRestrictedStockUnitsMember" xlink:type="locator" xlink:label="unit_PerformanceBasedRestrictedStockUnitsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_PerformanceBasedRestrictedStockUnitsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Performance-based restricted stock units.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_PerformanceBasedRestrictedStockUnitsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Performance Based Restricted Stock Units [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Unvested Restricted Stock Awards</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock" xlink:to="us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Nonvested Restricted Stock Shares Activity Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Unvested Performance-based Restricted Stock Units Awards</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Nonvested Performance Based Units Activity Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assumptions used to Value PSUs Granted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Assumptions used to Value Purchase Rights Granted Under ESPP</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Share Based Payment Award Employee Stock Purchase Plan Valuation Assumptions Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Earnings Per Share Basic and Diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Earnings Per Share Basic And Diluted Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Segment Reporting Information</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Segment Reporting Information By Segment [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Total Assets by Business Segment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock" xlink:to="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Reconciliation Of Assets From Segment To Consolidated [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:to="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Income Tax Expense (Benefit)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:to="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Components Of Income Tax Expense Benefit Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Expense Reconciliation Between U.S. Statutory Tax Rate and Effective Tax Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:to="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Effective Income Tax Rate Reconciliation Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Components of Deferred Tax Assets and Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:to="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Deferred Tax Assets And Liabilities Table [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SummaryOfIncomeTaxContingenciesTextBlock" xlink:type="locator" xlink:label="us-gaap_SummaryOfIncomeTaxContingenciesTextBlock" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SummaryOfIncomeTaxContingenciesTextBlock" xlink:to="us-gaap_SummaryOfIncomeTaxContingenciesTextBlock_lbl" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Cash Flow Supplemental Disclosures Table [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CommonStockDistributionPerShareTableTextBlock" xlink:type="locator" xlink:label="unit_CommonStockDistributionPerShareTableTextBlock" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockDistributionPerShareTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock distribution per share.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CommonStockDistributionPerShareTableTextBlock" xlink:to="unit_CommonStockDistributionPerShareTableTextBlock_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockDistributionPerShareTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Common Stock Distribution Per Share</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockDistributionPerShareTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Distribution Per Share Table [Text Block]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_OrganizationAndDescriptionOfBusinessLineItems" xlink:type="locator" xlink:label="unit_OrganizationAndDescriptionOfBusinessLineItems" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_OrganizationAndDescriptionOfBusinessTable" xlink:type="locator" xlink:label="unit_OrganizationAndDescriptionOfBusinessTable" />
    <link:label xml:lang="en-US" xlink:label="unit_OrganizationAndDescriptionOfBusinessTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Organization and description of business.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_OrganizationAndDescriptionOfBusinessTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Organization And Description Of Business [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis" xlink:type="locator" xlink:label="srt_OwnershipAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_OwnershipAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ownership</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_OwnershipAxis" xlink:to="srt_OwnershipAxis_lbl" />
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    <link:label xml:lang="en-US" xlink:label="srt_OwnershipDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ownership</link:label>
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    <link:label xml:lang="en-US" xlink:label="srt_OwnershipDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Ownership [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_UnitiGroupLPMember" xlink:type="locator" xlink:label="unit_UnitiGroupLPMember" />
    <link:label xml:lang="en-US" xlink:label="unit_UnitiGroupLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Uniti Group LP.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_UnitiGroupLPMember" xlink:to="unit_UnitiGroupLPMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_UnitiGroupLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Uniti Group LP</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_UnitiGroupLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Uniti Group L P [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event Type</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember" xlink:type="locator" xlink:label="us-gaap_SubsequentEventMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventMember" xlink:to="us-gaap_SubsequentEventMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_OrganizationAndDescriptionOfBusinessLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization And Description Of Business [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_OrganizationAndDescriptionOfBusinessLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Organization And Description Of Business [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NumberOfOperatingSegments" xlink:type="locator" xlink:label="us-gaap_NumberOfOperatingSegments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of operating business segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfOperatingSegments" xlink:to="us-gaap_NumberOfOperatingSegments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Operating Segments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:type="locator" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of partnership interests owned</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:to="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Limited Liability Company L L C Or Limited Partnership L P Managing Member Or General Partner Ownership Interest</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_SummaryOfSignificantAccountingPoliciesLineItems" xlink:type="locator" xlink:label="unit_SummaryOfSignificantAccountingPoliciesLineItems" />
    <link:label xml:lang="en-US" xlink:label="unit_SummaryOfSignificantAccountingPoliciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of significant accounting policies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SummaryOfSignificantAccountingPoliciesLineItems" xlink:to="unit_SummaryOfSignificantAccountingPoliciesLineItems_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_SummaryOfSignificantAccountingPoliciesTable" xlink:type="locator" xlink:label="unit_SummaryOfSignificantAccountingPoliciesTable" />
    <link:label xml:lang="en-US" xlink:label="unit_SummaryOfSignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of significant accounting policies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SummaryOfSignificantAccountingPoliciesTable" xlink:to="unit_SummaryOfSignificantAccountingPoliciesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_SummaryOfSignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary Of Significant Accounting Policies [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SummaryOfSignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Significant Accounting Policies [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment By Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Type [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FinanceLeaseAssetsMember" xlink:type="locator" xlink:label="unit_FinanceLeaseAssetsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FinanceLeaseAssetsMember" xlink:to="unit_FinanceLeaseAssetsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Lease Assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Assets [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionAxis" xlink:type="locator" xlink:label="us-gaap_RelatedPartyTransactionAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionAxis" xlink:to="us-gaap_RelatedPartyTransactionAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionDomain" xlink:type="locator" xlink:label="us-gaap_RelatedPartyTransactionDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RelatedPartyTransactionDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionDomain" xlink:to="us-gaap_RelatedPartyTransactionDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RelatedPartyTransactionDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_MasterLeaseMember" xlink:type="locator" xlink:label="unit_MasterLeaseMember" />
    <link:label xml:lang="en-US" xlink:label="unit_MasterLeaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Master lease.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_MasterLeaseMember" xlink:to="unit_MasterLeaseMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_MasterLeaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Master Lease</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MasterLeaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Master Lease [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:type="locator" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions By Related Party [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:type="locator" xlink:label="us-gaap_RelatedPartyDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyDomain" xlink:to="us-gaap_RelatedPartyDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Related Party [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:type="locator" xlink:label="us-gaap_LeaseholdImprovementsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tenant Capital Improvements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseholdImprovementsMember" xlink:to="us-gaap_LeaseholdImprovementsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leasehold Improvements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:type="locator" xlink:label="us-gaap_BalanceSheetLocationAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Location [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:type="locator" xlink:label="us-gaap_BalanceSheetLocationDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationDomain" xlink:to="us-gaap_BalanceSheetLocationDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Location [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_PropertyPlantAndEquipmentNetMember" xlink:type="locator" xlink:label="unit_PropertyPlantAndEquipmentNetMember" />
    <link:label xml:lang="en-US" xlink:label="unit_PropertyPlantAndEquipmentNetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">This element represents investments in property plant and equipment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PropertyPlantAndEquipmentNetMember" xlink:to="unit_PropertyPlantAndEquipmentNetMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_PropertyPlantAndEquipmentNetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Plant and Equipment, Net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PropertyPlantAndEquipmentNetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Net [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Name [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FourPercentageExchangeableSeniorNotesDueJuneFifteenTwoThousandTwentyFourMember" xlink:type="locator" xlink:label="unit_FourPercentageExchangeableSeniorNotesDueJuneFifteenTwoThousandTwentyFourMember" />
    <link:label xml:lang="en-US" xlink:label="unit_FourPercentageExchangeableSeniorNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Four percentage exchangeable senior notes due June fifteen two thousand twenty four member.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FourPercentageExchangeableSeniorNotesDueJuneFifteenTwoThousandTwentyFourMember" xlink:to="unit_FourPercentageExchangeableSeniorNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_FourPercentageExchangeableSeniorNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exchangeable Notes</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FourPercentageExchangeableSeniorNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Four Percentage Exchangeable Senior Notes Due June Fifteen Two Thousand Twenty Four [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Range [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeMember" xlink:to="srt_RangeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Range [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember" />
    <link:label xml:lang="en-US" xlink:label="srt_MaximumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MaximumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember" />
    <link:label xml:lang="en-US" xlink:label="srt_MinimumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MinimumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:type="locator" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance senior notes, stated percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Stated Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentMaturityDate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, maturity date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maturity Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:type="locator" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Anti-dilution adjustments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:type="locator" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock aggregate at an exercise price</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LitigationSettlementExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel">Settlement expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses" xlink:type="locator" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for credit losses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableAllowanceForCreditLosses" xlink:to="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credit Losses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProvisionForLoanLossesExpensed" xlink:type="locator" xlink:label="us-gaap_ProvisionForLoanLossesExpensed" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit losses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProvisionForLoanLossesExpensed" xlink:to="us-gaap_ProvisionForLoanLossesExpensed_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Provision For Loan Losses Expensed</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdateExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accounting standards update [Extensible List]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted" xlink:type="locator" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, ASU, Adopted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted" xlink:to="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Change In Accounting Principle Accounting Standards Update Adopted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate" xlink:type="locator" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, ASU, Adoption date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate" xlink:to="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Change In Accounting Principle Accounting Standards Update Adoption Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateTransitionOptionElectedExtensibleList" xlink:type="locator" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateTransitionOptionElectedExtensibleList" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateTransitionOptionElectedExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, ASU, Transition option elected [Extensible List]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateTransitionOptionElectedExtensibleList" xlink:to="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateTransitionOptionElectedExtensibleList_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateTransitionOptionElectedExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Change In Accounting Principle Accounting Standards Update Transition Option Elected Extensible List</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect" xlink:type="locator" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, ASU, Immaterial effect</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect" xlink:to="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Change In Accounting Principle Accounting Standards Update Immaterial Effect</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRentReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Straight-line revenue receivable</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_RightOfUseAssetsAndLeaseLiabilities" xlink:type="locator" xlink:label="unit_RightOfUseAssetsAndLeaseLiabilities" />
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetsAndLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Right of use assets and lease liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RightOfUseAssetsAndLeaseLiabilities" xlink:to="unit_RightOfUseAssetsAndLeaseLiabilities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Equity</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetsAndLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right of use assets and lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetsAndLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Right Of Use Assets And Lease Liabilities</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_PercentageOfPayCashDividendsInExcessOfTaxableIncome" xlink:type="locator" xlink:label="unit_PercentageOfPayCashDividendsInExcessOfTaxableIncome" />
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfPayCashDividendsInExcessOfTaxableIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of pay cash dividends in excess of taxable income.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PercentageOfPayCashDividendsInExcessOfTaxableIncome" xlink:to="unit_PercentageOfPayCashDividendsInExcessOfTaxableIncome_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_DebtInstrumentsMaturityYear" xlink:type="locator" xlink:label="unit_DebtInstrumentsMaturityYear" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentsMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt Instrument Maturity Year.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DebtInstrumentsMaturityYear" xlink:to="unit_DebtInstrumentsMaturityYear_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentsMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, maturity year</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentsMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instruments Maturity Year</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfPayCashDividendsInExcessOfTaxableIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of pay cash dividends in excess of taxable income</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfPayCashDividendsInExcessOfTaxableIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Pay Cash Dividends In Excess Of Taxable Income</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_MinimumPercentageOfTaxableIncomeToBeDistributedAsDividendToMaintainREITStatus" xlink:type="locator" xlink:label="unit_MinimumPercentageOfTaxableIncomeToBeDistributedAsDividendToMaintainREITStatus" />
    <link:label xml:lang="en-US" xlink:label="unit_MinimumPercentageOfTaxableIncomeToBeDistributedAsDividendToMaintainREITStatus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum percentage of taxable income to be distributed as dividend to maintain REIT status.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_MinimumPercentageOfTaxableIncomeToBeDistributedAsDividendToMaintainREITStatus" xlink:to="unit_MinimumPercentageOfTaxableIncomeToBeDistributedAsDividendToMaintainREITStatus_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_NetLeverageRatio" xlink:type="locator" xlink:label="unit_NetLeverageRatio" />
    <link:label xml:lang="en-US" xlink:label="unit_NetLeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Net leverage ratio.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NetLeverageRatio" xlink:to="unit_NetLeverageRatio_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_MinimumPercentageOfTaxableIncomeToBeDistributedAsDividendToMaintainREITStatus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum percentage of taxable income to be distributed as dividend to maintain REIT status</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MinimumPercentageOfTaxableIncomeToBeDistributedAsDividendToMaintainREITStatus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Percentage Of Taxable Income To Be Distributed As Dividend To Maintain R E I T Status</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NetLeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net leverage ratio</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NetLeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Leverage Ratio</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLikelihoodOfUnfavorableSettlement" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExaminationLikelihoodOfUnfavorableSettlement" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExaminationLikelihoodOfUnfavorableSettlement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income tax examination, description</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExaminationLikelihoodOfUnfavorableSettlement" xlink:to="us-gaap_IncomeTaxExaminationLikelihoodOfUnfavorableSettlement_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExaminationLikelihoodOfUnfavorableSettlement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Examination Likelihood Of Unfavorable Settlement</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefits" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized tax benefit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefits" xlink:to="us-gaap_UnrecognizedTaxBenefits_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_GainRecognizedFromSaleOfAssetsAfterSpinoffRecognitionPeriod" xlink:type="locator" xlink:label="unit_GainRecognizedFromSaleOfAssetsAfterSpinoffRecognitionPeriod" />
    <link:label xml:lang="en-US" xlink:label="unit_GainRecognizedFromSaleOfAssetsAfterSpinoffRecognitionPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain recognized from sale of assets after spinoff recognition period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_GainRecognizedFromSaleOfAssetsAfterSpinoffRecognitionPeriod" xlink:to="unit_GainRecognizedFromSaleOfAssetsAfterSpinoffRecognitionPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_GainRecognizedFromSaleOfAssetsAfterSpinoffRecognitionPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gain recognized from sale of assets after spinoff recognition period</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_GainRecognizedFromSaleOfAssetsAfterSpinoffRecognitionPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Gain Recognized From Sale Of Assets After Spinoff Recognition Period</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_PercentageOfFairValueInExcessOfCarryingValue" xlink:type="locator" xlink:label="unit_PercentageOfFairValueInExcessOfCarryingValue" />
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfFairValueInExcessOfCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of fair value in excess of carrying value.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PercentageOfFairValueInExcessOfCarryingValue" xlink:to="unit_PercentageOfFairValueInExcessOfCarryingValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfFairValueInExcessOfCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of fair value in excess of carrying value</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfFairValueInExcessOfCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Fair Value In Excess Of Carrying Value</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillImpairmentLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Goodwill impairment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskPercentage1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Master lease and the windstream leases revenue percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskPercentage1" xlink:to="us-gaap_ConcentrationRiskPercentage1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Percentage1</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Additional paid in capital</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Retained earnings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings Accumulated Deficit</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_InvestmentInterestPercentage" xlink:type="locator" xlink:label="unit_InvestmentInterestPercentage" />
    <link:label xml:lang="en-US" xlink:label="unit_InvestmentInterestPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment interest percentage.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_InvestmentInterestPercentage" xlink:to="unit_InvestmentInterestPercentage_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RevenueRecognitionLineItems" xlink:type="locator" xlink:label="unit_RevenueRecognitionLineItems" />
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRecognitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue Recognition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RevenueRecognitionLineItems" xlink:to="unit_RevenueRecognitionLineItems_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RevenueRecognitionTable" xlink:type="locator" xlink:label="unit_RevenueRecognitionTable" />
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRecognitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue recognition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RevenueRecognitionTable" xlink:to="unit_RevenueRecognitionTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRecognitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue Recognition [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRecognitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Recognition [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:type="locator" xlink:label="srt_StatementGeographicalAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Geographical [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:type="locator" xlink:label="srt_SegmentGeographicalDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_SegmentGeographicalDomain" xlink:to="srt_SegmentGeographicalDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Geographical [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US" />
    <link:label xml:lang="en-US" xlink:label="country_US_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_US" xlink:to="country_US_lbl" />
    <link:label xml:lang="en-US" xlink:label="country_US_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">UNITED STATES</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_TowerMember" xlink:type="locator" xlink:label="unit_TowerMember" />
    <link:label xml:lang="en-US" xlink:label="unit_TowerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Tower.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_TowerMember" xlink:to="unit_TowerMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_TowerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tower</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_TowerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Tower [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_MelodyInvestmentAdvisorsMember" xlink:type="locator" xlink:label="unit_MelodyInvestmentAdvisorsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_MelodyInvestmentAdvisorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Melody Investment Advisors</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_MelodyInvestmentAdvisorsMember" xlink:to="unit_MelodyInvestmentAdvisorsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_MelodyInvestmentAdvisorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Melody Investment Advisors</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MelodyInvestmentAdvisorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Melody Investment Advisors [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201602Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">ASU 2016-02</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201409Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201409Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASC 2014-09</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingStandardsUpdate201409Member" xlink:to="us-gaap_AccountingStandardsUpdate201409Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201409Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update201409 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRecognitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue Recognition [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRecognitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Recognition [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of portfolio, cash consideration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Consideration</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_InvestmentInterestPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment interest retained, percentage</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_InvestmentInterestPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Investment Interest Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:type="locator" xlink:label="us-gaap_DisaggregationOfRevenueTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disaggregation Of Revenue [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisaggregationOfRevenueTable" xlink:to="us-gaap_DisaggregationOfRevenueTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation Of Revenue [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:type="locator" xlink:label="srt_ProductOrServiceAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProductOrServiceAxis" xlink:to="srt_ProductOrServiceAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Product Or Service [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:type="locator" xlink:label="srt_ProductsAndServicesDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProductsAndServicesDomain" xlink:to="srt_ProductsAndServicesDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Products And Services [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LitBackhaulMember" xlink:type="locator" xlink:label="unit_LitBackhaulMember" />
    <link:label xml:lang="en-US" xlink:label="unit_LitBackhaulMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lit backhaul.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LitBackhaulMember" xlink:to="unit_LitBackhaulMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_LitBackhaulMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lit Backhaul</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LitBackhaulMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lit Backhaul [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_EnterpriseAndWholesaleMember" xlink:type="locator" xlink:label="unit_EnterpriseAndWholesaleMember" />
    <link:label xml:lang="en-US" xlink:label="unit_EnterpriseAndWholesaleMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Enterprise and wholesale.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_EnterpriseAndWholesaleMember" xlink:to="unit_EnterpriseAndWholesaleMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_EnterpriseAndWholesaleMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Enterprise and Wholesale</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EnterpriseAndWholesaleMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Enterprise And Wholesale [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ERateAndGovernmentMember" xlink:type="locator" xlink:label="unit_ERateAndGovernmentMember" />
    <link:label xml:lang="en-US" xlink:label="unit_ERateAndGovernmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">E-Rate and government.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ERateAndGovernmentMember" xlink:to="unit_ERateAndGovernmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ERateAndGovernmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">E-Rate and Government</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ERateAndGovernmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">E Rate And Government [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_OtherRevenueGeneratingActivityMember" xlink:type="locator" xlink:label="unit_OtherRevenueGeneratingActivityMember" />
    <link:label xml:lang="en-US" xlink:label="unit_OtherRevenueGeneratingActivityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Other Revenue Generating Activity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_OtherRevenueGeneratingActivityMember" xlink:to="unit_OtherRevenueGeneratingActivityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_OtherRevenueGeneratingActivityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_OtherRevenueGeneratingActivityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Revenue Generating Activity [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:type="locator" xlink:label="us-gaap_DisaggregationOfRevenueLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disaggregation Of Revenue [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisaggregationOfRevenueLineItems" xlink:to="us-gaap_DisaggregationOfRevenueLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation Of Revenue [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:type="locator" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total revenue from contracts with customers</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:to="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue From Contract With Customer Excluding Assessed Tax</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ContractWithCustomerLeaseReceivables" xlink:type="locator" xlink:label="unit_ContractWithCustomerLeaseReceivables" />
    <link:label xml:lang="en-US" xlink:label="unit_ContractWithCustomerLeaseReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Contract with customer, lease receivables.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ContractWithCustomerLeaseReceivables" xlink:to="unit_ContractWithCustomerLeaseReceivables_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_ContractWithCustomerReceivables" xlink:type="locator" xlink:label="unit_ContractWithCustomerReceivables" />
    <link:label xml:lang="en-US" xlink:label="unit_ContractWithCustomerReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Contract with customer, receivables.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ContractWithCustomerReceivables" xlink:to="unit_ContractWithCustomerReceivables_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ContractWithCustomerLeaseReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease receivables</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ContractWithCustomerLeaseReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Lease Receivables</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ContractWithCustomerReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Receivables from contracts with customers</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ContractWithCustomerReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Receivables</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Revenue recognized that was included in the contract liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:to="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Liability Revenue Recognized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityAbstract" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Asset And Liability [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract" xlink:to="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredRevenueArrangementByTypeTable" xlink:type="locator" xlink:label="us-gaap_DeferredRevenueArrangementByTypeTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRevenueArrangementByTypeTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred Revenue Arrangement By Type [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenueArrangementByTypeTable" xlink:to="us-gaap_DeferredRevenueArrangementByTypeTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRevenueArrangementByTypeTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Revenue Arrangement By Type [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredRevenueArrangementLineItems" xlink:type="locator" xlink:label="us-gaap_DeferredRevenueArrangementLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRevenueArrangementLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred Revenue Arrangement [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenueArrangementLineItems" xlink:to="us-gaap_DeferredRevenueArrangementLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRevenueArrangementLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Revenue Arrangement [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerAssetNet" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerAssetNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerAssetNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance, Contract Assets at December 31, 2019</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerAssetNet" xlink:to="us-gaap_ContractWithCustomerAssetNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerAssetNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Asset Net</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerAssetNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance, Contract Assets at December 31, 2020</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance, Contract Liabilities at December 31, 2019</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerLiability" xlink:to="us-gaap_ContractWithCustomerLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Liability</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance, Contract Liabilities at December 31, 2020</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_RevenueRemainingPerformanceObligationContractsThatBeingInvoicedMonthly" xlink:type="locator" xlink:label="unit_RevenueRemainingPerformanceObligationContractsThatBeingInvoicedMonthly" />
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationContractsThatBeingInvoicedMonthly_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue remaining performance obligation contracts that being invoiced monthly.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RevenueRemainingPerformanceObligationContractsThatBeingInvoicedMonthly" xlink:to="unit_RevenueRemainingPerformanceObligationContractsThatBeingInvoicedMonthly_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RevenueRemainingPerformanceObligationBacklogForSalesBookings" xlink:type="locator" xlink:label="unit_RevenueRemainingPerformanceObligationBacklogForSalesBookings" />
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationBacklogForSalesBookings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue remaining performance obligation backlog for sales bookings.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RevenueRemainingPerformanceObligationBacklogForSalesBookings" xlink:to="unit_RevenueRemainingPerformanceObligationBacklogForSalesBookings_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RevenueRemainingPerformanceObligationBacklogExpectedTimingOfSatisfactionPeriod" xlink:type="locator" xlink:label="unit_RevenueRemainingPerformanceObligationBacklogExpectedTimingOfSatisfactionPeriod" />
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationBacklogExpectedTimingOfSatisfactionPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue remaining performance obligation backlog expected timing of satisfaction period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RevenueRemainingPerformanceObligationBacklogExpectedTimingOfSatisfactionPeriod" xlink:to="unit_RevenueRemainingPerformanceObligationBacklogExpectedTimingOfSatisfactionPeriod_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future revenues under contract</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligation" xlink:to="us-gaap_RevenueRemainingPerformanceObligation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationContractsThatBeingInvoicedMonthly_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contracts currently being invoiced</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationContractsThatBeingInvoicedMonthly_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation Contracts That Being Invoiced Monthly</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationBacklogForSalesBookings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Backlog for sales bookings</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationBacklogForSalesBookings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation Backlog For Sales Bookings</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationBacklogExpectedTimingOfSatisfactionPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average remaining contract term of backlog sales bookings</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RevenueRemainingPerformanceObligationBacklogExpectedTimingOfSatisfactionPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation Backlog Expected Timing Of Satisfaction Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Start Date [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average remaining contract term for contracts currently billing</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorOperatingLeaseTermination" xlink:type="locator" xlink:label="unit_LessorOperatingLeaseTermination" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorOperatingLeaseTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor, operating lease, termination.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorOperatingLeaseTermination" xlink:to="unit_LessorOperatingLeaseTermination_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LeasesLineItems" xlink:type="locator" xlink:label="unit_LeasesLineItems" />
    <link:label xml:lang="en-US" xlink:label="unit_LeasesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LeasesLineItems" xlink:to="unit_LeasesLineItems_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LeasesTable" xlink:type="locator" xlink:label="unit_LeasesTable" />
    <link:label xml:lang="en-US" xlink:label="unit_LeasesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LeasesTable" xlink:to="unit_LeasesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_LeasesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leases [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LeasesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leases [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfArrangementAxis" xlink:type="locator" xlink:label="us-gaap_TypeOfArrangementAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collaborative Arrangement and Arrangement Other than Collaborative</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TypeOfArrangementAxis" xlink:to="us-gaap_TypeOfArrangementAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Type Of Arrangement [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:type="locator" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collaborative Arrangement and Arrangement Other than Collaborative</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Arrangements And Nonarrangement Transactions [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_IncumbentLocalExchangeCarrierMasterLeaseAgreementMember" xlink:type="locator" xlink:label="unit_IncumbentLocalExchangeCarrierMasterLeaseAgreementMember" />
    <link:label xml:lang="en-US" xlink:label="unit_IncumbentLocalExchangeCarrierMasterLeaseAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Incumbent Local Exchange Carrier Master Lease Agreement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_IncumbentLocalExchangeCarrierMasterLeaseAgreementMember" xlink:to="unit_IncumbentLocalExchangeCarrierMasterLeaseAgreementMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_IncumbentLocalExchangeCarrierMasterLeaseAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ILEC MLA</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IncumbentLocalExchangeCarrierMasterLeaseAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incumbent Local Exchange Carrier Master Lease Agreement [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CompetitiveLocalExchangeCarrierMasterLeaseAgreementMember" xlink:type="locator" xlink:label="unit_CompetitiveLocalExchangeCarrierMasterLeaseAgreementMember" />
    <link:label xml:lang="en-US" xlink:label="unit_CompetitiveLocalExchangeCarrierMasterLeaseAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Competitive Local Exchange Carrier Master Lease Agreement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CompetitiveLocalExchangeCarrierMasterLeaseAgreementMember" xlink:to="unit_CompetitiveLocalExchangeCarrierMasterLeaseAgreementMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CompetitiveLocalExchangeCarrierMasterLeaseAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CLEC MLA</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CompetitiveLocalExchangeCarrierMasterLeaseAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Competitive Local Exchange Carrier Master Lease Agreement [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MajorCustomersAxis" xlink:type="locator" xlink:label="srt_MajorCustomersAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_MajorCustomersAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MajorCustomersAxis" xlink:to="srt_MajorCustomersAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MajorCustomersAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Major Customers [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_NameOfMajorCustomerDomain" xlink:type="locator" xlink:label="srt_NameOfMajorCustomerDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_NameOfMajorCustomerDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_NameOfMajorCustomerDomain" xlink:to="srt_NameOfMajorCustomerDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_NameOfMajorCustomerDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Name Of Major Customer [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_SeniorSecuredRevolvingCreditFacilityMember" xlink:type="locator" xlink:label="unit_SeniorSecuredRevolvingCreditFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="unit_SeniorSecuredRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Senior secured revolving credit facility.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SeniorSecuredRevolvingCreditFacilityMember" xlink:to="unit_SeniorSecuredRevolvingCreditFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_SeniorSecuredRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior Secured Revolving Credit Facility</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SeniorSecuredRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Senior Secured Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:type="locator" xlink:label="srt_StatementScenarioAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementScenarioAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementScenarioAxis" xlink:to="srt_StatementScenarioAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementScenarioAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Scenario [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:type="locator" xlink:label="srt_ScenarioUnspecifiedDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScenarioUnspecifiedDomain" xlink:to="srt_ScenarioUnspecifiedDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Scenario Unspecified [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProFormaMember" xlink:type="locator" xlink:label="srt_ProFormaMember" />
    <link:label xml:lang="en-US" xlink:label="srt_ProFormaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pro Forma</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProFormaMember" xlink:to="srt_ProFormaMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ProFormaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pro Forma [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_EquipmentLoanAgreementMember" xlink:type="locator" xlink:label="unit_EquipmentLoanAgreementMember" />
    <link:label xml:lang="en-US" xlink:label="unit_EquipmentLoanAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Equipment loan agreement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_EquipmentLoanAgreementMember" xlink:to="unit_EquipmentLoanAgreementMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_EquipmentLoanAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equipment Loan Agreement</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EquipmentLoanAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Equipment Loan Agreement [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssetsMember" xlink:type="locator" xlink:label="us-gaap_OtherAssetsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsMember" xlink:to="us-gaap_OtherAssetsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LeasesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leases [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LeasesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leases [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeaseTermOfContract" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeaseTermOfContract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseTermOfContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, initial lease term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeaseTermOfContract" xlink:to="us-gaap_LessorOperatingLeaseTermOfContract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseTermOfContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Term Of Contract</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeaseRenewalTerm" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeaseRenewalTerm" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseRenewalTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, lease renewal term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeaseRenewalTerm" xlink:to="us-gaap_LessorOperatingLeaseRenewalTerm_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseRenewalTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Renewal Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, operating lease, existence of option to extend [true false]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend" xlink:to="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Existence Of Option To Extend</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeaseOptionToExtend" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeaseOptionToExtend" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, lease option to extend, description</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeaseOptionToExtend" xlink:to="us-gaap_LessorOperatingLeaseOptionToExtend_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Option To Extend</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeaseExistenceOfOptionToTerminate" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToTerminate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, operating lease, existence of option to terminate [true false]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeaseExistenceOfOptionToTerminate" xlink:to="us-gaap_LessorOperatingLeaseExistenceOfOptionToTerminate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Existence Of Option To Terminate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeaseOptionToTerminate" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeaseOptionToTerminate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, lease option to terminate, description</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeaseOptionToTerminate" xlink:to="us-gaap_LessorOperatingLeaseOptionToTerminate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeaseOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Option To Terminate</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorOperatingLeaseTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor operating lease, termination</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorOperatingLeaseTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Termination</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLeaseIncome" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLeaseIncome" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLeaseIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease income - operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLeaseIncome" xlink:to="us-gaap_OperatingLeaseLeaseIncome_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLeaseIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Lease Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Payments To Be Received Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Payments To Be Received Two Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Payments To Be Received Three Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Payments To Be Received Four Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Payments To Be Received Five Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Payments To Be Received Thereafter</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease receivables</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Payments To Be Received</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable" xlink:type="locator" xlink:label="us-gaap_LesseeLeaseDescriptionTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeaseDescriptionTable" xlink:to="us-gaap_LesseeLeaseDescriptionTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Lease Description [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermAxis" xlink:type="locator" xlink:label="us-gaap_LeaseContractualTermAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseContractualTermAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease Contractual Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseContractualTermAxis" xlink:to="us-gaap_LeaseContractualTermAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseContractualTermAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Contractual Term [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermDomain" xlink:type="locator" xlink:label="us-gaap_LeaseContractualTermDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseContractualTermDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease Contractual Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseContractualTermDomain" xlink:to="us-gaap_LeaseContractualTermDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseContractualTermDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Contractual Term [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems" xlink:type="locator" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeaseDescriptionLineItems" xlink:to="us-gaap_LesseeLeaseDescriptionLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Lease Description [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total future minimum lease payments to be received</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorUnderlyingAssetsOperatingLeaseGross" xlink:type="locator" xlink:label="unit_LessorUnderlyingAssetsOperatingLeaseGross" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorUnderlyingAssetsOperatingLeaseGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor, underlying assets operating lease gross.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorUnderlyingAssetsOperatingLeaseGross" xlink:to="unit_LessorUnderlyingAssetsOperatingLeaseGross_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorUnderlyingAssetsOperatingLeaseAccumulatedDepreciation" xlink:type="locator" xlink:label="unit_LessorUnderlyingAssetsOperatingLeaseAccumulatedDepreciation" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorUnderlyingAssetsOperatingLeaseAccumulatedDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor underlying assets operating lease accumulated depreciation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorUnderlyingAssetsOperatingLeaseAccumulatedDepreciation" xlink:to="unit_LessorUnderlyingAssetsOperatingLeaseAccumulatedDepreciation_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorLeaseDescriptionTable" xlink:type="locator" xlink:label="us-gaap_LessorLeaseDescriptionTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorLeaseDescriptionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor Lease Description [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorLeaseDescriptionTable" xlink:to="us-gaap_LessorLeaseDescriptionTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorLeaseDescriptionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Lease Description [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LandMember" xlink:type="locator" xlink:label="us-gaap_LandMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LandMember" xlink:to="us-gaap_LandMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Land [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:type="locator" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Building and Improvements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BuildingAndBuildingImprovementsMember" xlink:to="us-gaap_BuildingAndBuildingImprovementsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Building And Building Improvements [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_RealPropertyInterestsMember" xlink:type="locator" xlink:label="unit_RealPropertyInterestsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_RealPropertyInterestsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Real property interests.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RealPropertyInterestsMember" xlink:to="unit_RealPropertyInterestsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_RealPropertyInterestsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Property Interests</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealPropertyInterestsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Property Interests [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_PolesMember" xlink:type="locator" xlink:label="unit_PolesMember" />
    <link:label xml:lang="en-US" xlink:label="unit_PolesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Poles.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PolesMember" xlink:to="unit_PolesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_PolesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poles</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PolesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Poles [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FiberMember" xlink:type="locator" xlink:label="unit_FiberMember" />
    <link:label xml:lang="en-US" xlink:label="unit_FiberMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Fiber.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FiberMember" xlink:to="unit_FiberMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_FiberMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fiber</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiberMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fiber [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquipmentMember" xlink:type="locator" xlink:label="us-gaap_EquipmentMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquipmentMember" xlink:to="us-gaap_EquipmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Equipment [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CopperMember" xlink:type="locator" xlink:label="unit_CopperMember" />
    <link:label xml:lang="en-US" xlink:label="unit_CopperMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Copper.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CopperMember" xlink:to="unit_CopperMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CopperMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Copper</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CopperMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Copper [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ConduitMember" xlink:type="locator" xlink:label="unit_ConduitMember" />
    <link:label xml:lang="en-US" xlink:label="unit_ConduitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Conduit.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ConduitMember" xlink:to="unit_ConduitMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ConduitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conduit</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ConduitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Conduit [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_TowerAssetsMember" xlink:type="locator" xlink:label="unit_TowerAssetsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_TowerAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Tower assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_TowerAssetsMember" xlink:to="unit_TowerAssetsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_TowerAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tower assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_TowerAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Tower Assets [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_AssetsHeldUnderFinanceLeaseMember" xlink:type="locator" xlink:label="unit_AssetsHeldUnderFinanceLeaseMember" />
    <link:label xml:lang="en-US" xlink:label="unit_AssetsHeldUnderFinanceLeaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Assets held under finance lease.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_AssetsHeldUnderFinanceLeaseMember" xlink:to="unit_AssetsHeldUnderFinanceLeaseMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_AssetsHeldUnderFinanceLeaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Lease Assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AssetsHeldUnderFinanceLeaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets Held Under Finance Lease [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember" xlink:type="locator" xlink:label="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember" xlink:to="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Capitalized Property Plant And Equipment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorLeaseDescriptionLineItems" xlink:type="locator" xlink:label="us-gaap_LessorLeaseDescriptionLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorLeaseDescriptionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor Lease Description [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorLeaseDescriptionLineItems" xlink:to="us-gaap_LessorLeaseDescriptionLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LessorLeaseDescriptionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Lease Description [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorUnderlyingAssetsOperatingLeaseGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Underlying assets under operating leases, gross</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorUnderlyingAssetsOperatingLeaseGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Underlying Assets Operating Lease Gross</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorUnderlyingAssetsOperatingLeaseAccumulatedDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: accumulated depreciation</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorUnderlyingAssetsOperatingLeaseAccumulatedDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Underlying Assets Operating Lease Accumulated Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLease" xlink:type="locator" xlink:label="us-gaap_NetInvestmentInLease" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetInvestmentInLease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Underlying assets under operating leases, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetInvestmentInLease" xlink:to="us-gaap_NetInvestmentInLease_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetInvestmentInLease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Investment In Lease</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DisposalGroupIncludingDiscontinuedOperationAssetsUnderOperatingLeases" xlink:type="locator" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationAssetsUnderOperatingLeases" />
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationAssetsUnderOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operation assets under operating leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DisposalGroupIncludingDiscontinuedOperationAssetsUnderOperatingLeases" xlink:to="unit_DisposalGroupIncludingDiscontinuedOperationAssetsUnderOperatingLeases_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:type="locator" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:to="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:type="locator" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:to="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Groups Including Discontinued Operations Name [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_UnitiFiberNortheastOperationsAndDarkFiberIRUContractsMember" xlink:type="locator" xlink:label="unit_UnitiFiberNortheastOperationsAndDarkFiberIRUContractsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_UnitiFiberNortheastOperationsAndDarkFiberIRUContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Uniti fiber northeast operations and dark fiber IRU contracts.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_UnitiFiberNortheastOperationsAndDarkFiberIRUContractsMember" xlink:to="unit_UnitiFiberNortheastOperationsAndDarkFiberIRUContractsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_UnitiFiberNortheastOperationsAndDarkFiberIRUContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Uniti Fiber Northeast Operations and Dark Fiber IRU Contracts</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_UnitiFiberNortheastOperationsAndDarkFiberIRUContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Uniti Fiber Northeast Operations And Dark Fiber I R U Contracts [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupClassificationAxis" xlink:type="locator" xlink:label="us-gaap_DisposalGroupClassificationAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupClassificationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group Classification</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupClassificationAxis" xlink:to="us-gaap_DisposalGroupClassificationAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupClassificationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Classification [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupClassificationDomain" xlink:type="locator" xlink:label="us-gaap_DisposalGroupClassificationDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupClassificationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group Classification</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupClassificationDomain" xlink:to="us-gaap_DisposalGroupClassificationDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupClassificationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Classification [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:type="locator" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group, Held for Sale, Not qualified as Discontinued Operation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:to="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Heldforsale Not Discontinued Operations [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationAssetsUnderOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets under operating leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationAssetsUnderOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Assets Under Operating Leases</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DepreciationExpenseForUnderlyingAssetsUnderOperatingLeases" xlink:type="locator" xlink:label="unit_DepreciationExpenseForUnderlyingAssetsUnderOperatingLeases" />
    <link:label xml:lang="en-US" xlink:label="unit_DepreciationExpenseForUnderlyingAssetsUnderOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Depreciation expense for underlying assets under operating leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DepreciationExpenseForUnderlyingAssetsUnderOperatingLeases" xlink:to="unit_DepreciationExpenseForUnderlyingAssetsUnderOperatingLeases_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_DepreciationExpenseForUnderlyingAssetsUnderOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation expense for underlying assets under operating leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DepreciationExpenseForUnderlyingAssetsUnderOperatingLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation Expense For Underlying Assets Under Operating Leases</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LesseeOperatingLeaseTermination" xlink:type="locator" xlink:label="unit_LesseeOperatingLeaseTermination" />
    <link:label xml:lang="en-US" xlink:label="unit_LesseeOperatingLeaseTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee operating lease, termination.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LesseeOperatingLeaseTermination" xlink:to="unit_LesseeOperatingLeaseTermination_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseTermOfContract" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseTermOfContract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseTermOfContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee, initial lease term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseTermOfContract" xlink:to="us-gaap_LesseeOperatingLeaseTermOfContract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseTermOfContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Term Of Contract</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseRenewalTerm" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseRenewalTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee, lease renewal term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseRenewalTerm" xlink:to="us-gaap_LesseeOperatingLeaseRenewalTerm_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseRenewalTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Renewal Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee, operating lease, existence of option to extend [true false]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend" xlink:to="us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Existence Of Option To Extend</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseOptionToExtend" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseOptionToExtend" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee, lease option to extend, description</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseOptionToExtend" xlink:to="us-gaap_LesseeOperatingLeaseOptionToExtend_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseOptionToExtend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Option To Extend</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseExistenceOfOptionToTerminate" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseExistenceOfOptionToTerminate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseExistenceOfOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee, operating lease, existence of option to terminate [true false]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseExistenceOfOptionToTerminate" xlink:to="us-gaap_LesseeOperatingLeaseExistenceOfOptionToTerminate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseExistenceOfOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Existence Of Option To Terminate</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LesseeOperatingLeaseTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee, lease option to terminate, description</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LesseeOperatingLeaseTermination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Termination</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseOptionToTerminate" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseOptionToTerminate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee, option to terminate, description</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseOptionToTerminate" xlink:to="us-gaap_LesseeOperatingLeaseOptionToTerminate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseOptionToTerminate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Option To Terminate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermLeaseCommitmentAmount" xlink:type="locator" xlink:label="us-gaap_ShortTermLeaseCommitmentAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortTermLeaseCommitmentAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short term lease commitments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermLeaseCommitmentAmount" xlink:to="us-gaap_ShortTermLeaseCommitmentAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortTermLeaseCommitmentAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Short Term Lease Commitment Amount</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FinanceLeaseCost" xlink:type="locator" xlink:label="unit_FinanceLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease cost.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FinanceLeaseCost" xlink:to="unit_FinanceLeaseCost_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of ROU assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseRightOfUseAssetAmortization" xlink:to="us-gaap_FinanceLeaseRightOfUseAssetAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Right Of Use Asset Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseInterestExpense" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseInterestExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseInterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest on lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseInterestExpense" xlink:to="us-gaap_FinanceLeaseInterestExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseInterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Interest Expense</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total finance lease cost</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseCost" xlink:to="us-gaap_OperatingLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermLeaseCost" xlink:type="locator" xlink:label="us-gaap_ShortTermLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermLeaseCost" xlink:to="us-gaap_ShortTermLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Short Term Lease Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableLeaseCost" xlink:type="locator" xlink:label="us-gaap_VariableLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableLeaseCost" xlink:to="us-gaap_VariableLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Lease Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubleaseIncome" xlink:type="locator" xlink:label="us-gaap_SubleaseIncome" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less sublease income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubleaseIncome" xlink:to="us-gaap_SubleaseIncome_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Sublease Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseCost" xlink:type="locator" xlink:label="us-gaap_LeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCost" xlink:to="us-gaap_LeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Cost</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FinanceLeaseAbstract" xlink:type="locator" xlink:label="unit_FinanceLeaseAbstract" />
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FinanceLeaseAbstract" xlink:to="unit_FinanceLeaseAbstract_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_WeightedAverageRemainingLeaseTermAbstract" xlink:type="locator" xlink:label="unit_WeightedAverageRemainingLeaseTermAbstract" />
    <link:label xml:lang="en-US" xlink:label="unit_WeightedAverageRemainingLeaseTermAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted average remaining lease term.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_WeightedAverageRemainingLeaseTermAbstract" xlink:to="unit_WeightedAverageRemainingLeaseTermAbstract_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_WeightedAverageDiscountRateAbstract" xlink:type="locator" xlink:label="unit_WeightedAverageDiscountRateAbstract" />
    <link:label xml:lang="en-US" xlink:label="unit_WeightedAverageDiscountRateAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted average discount rate.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_WeightedAverageDiscountRateAbstract" xlink:to="unit_WeightedAverageDiscountRateAbstract_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeasesOperatingAbstract" xlink:type="locator" xlink:label="us-gaap_LeasesOperatingAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeasesOperatingAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeasesOperatingAbstract" xlink:to="us-gaap_LeasesOperatingAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeasesOperatingAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leases Operating [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ROU asset, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Right Of Use Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">ROU liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Lease, Liability, Statement of Financial Position [Extensible List]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability Statement Of Financial Position Extensible List</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FinanceLeaseAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseRightOfUseAsset" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ROU asset, gross</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseRightOfUseAsset" xlink:to="us-gaap_FinanceLeaseRightOfUseAsset_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Right Of Use Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">ROU liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiability" xlink:to="us-gaap_FinanceLeaseLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Lease, Liability, Statement of Financial Position [Extensible List]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Statement Of Financial Position Extensible List</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_WeightedAverageRemainingLeaseTermAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average remaining lease term</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_WeightedAverageRemainingLeaseTermAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Remaining Lease Term [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Weighted Average Remaining Lease Term1</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Weighted Average Remaining Lease Term1</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_WeightedAverageDiscountRateAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average discount rate</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_WeightedAverageDiscountRateAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Discount Rate [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Weighted Average Discount Rate Percent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Weighted Average Discount Rate Percent</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DisposalGroupIncludingDiscontinuedOperationsRightOfUseAssetsNet" xlink:type="locator" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsRightOfUseAssetsNet" />
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsRightOfUseAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operations right of use assets net.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DisposalGroupIncludingDiscontinuedOperationsRightOfUseAssetsNet" xlink:to="unit_DisposalGroupIncludingDiscontinuedOperationsRightOfUseAssetsNet_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities" xlink:type="locator" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities" />
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operation lease liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities" xlink:to="unit_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_DisposalGroupIncludingDiscontinuedOperationFinanceLeaseAssets" xlink:type="locator" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationFinanceLeaseAssets" />
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationFinanceLeaseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operation finance lease assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DisposalGroupIncludingDiscontinuedOperationFinanceLeaseAssets" xlink:to="unit_DisposalGroupIncludingDiscontinuedOperationFinanceLeaseAssets_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_DisposalGroupIncludingDiscontinuedOperationsFinanceLeaseObligations" xlink:type="locator" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsFinanceLeaseObligations" />
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsFinanceLeaseObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operations finance lease obligations.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DisposalGroupIncludingDiscontinuedOperationsFinanceLeaseObligations" xlink:to="unit_DisposalGroupIncludingDiscontinuedOperationsFinanceLeaseObligations_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsRightOfUseAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">ROU assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsRightOfUseAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operations Right Of Use Assets Net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Lease Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationFinanceLeaseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance lease assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationFinanceLeaseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Finance Lease Assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsFinanceLeaseObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance lease obligations</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsFinanceLeaseObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operations Finance Lease Obligations</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_NonCashOperatingLeaseAndReMeasurementsNet" xlink:type="locator" xlink:label="unit_NonCashOperatingLeaseAndReMeasurementsNet" />
    <link:label xml:lang="en-US" xlink:label="unit_NonCashOperatingLeaseAndReMeasurementsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Non cash operating lease and re-measurements, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NonCashOperatingLeaseAndReMeasurementsNet" xlink:to="unit_NonCashOperatingLeaseAndReMeasurementsNet_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_NonCashFinanceLease" xlink:type="locator" xlink:label="unit_NonCashFinanceLease" />
    <link:label xml:lang="en-US" xlink:label="unit_NonCashFinanceLease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-cash finance lease.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NonCashFinanceLease" xlink:to="unit_NonCashFinanceLease_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" xlink:type="locator" xlink:label="unit_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="unit_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash paid for amounts included in measurement of lease liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" xlink:to="unit_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_NonCashItemsAbstract" xlink:type="locator" xlink:label="unit_NonCashItemsAbstract" />
    <link:label xml:lang="en-US" xlink:label="unit_NonCashItemsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-cash items abstract.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NonCashItemsAbstract" xlink:to="unit_NonCashItemsAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for amounts included in the measurement of lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Paid For Amounts Included In Measurement Of Lease Liabilities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseInterestPaymentOnLiability" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating cash flows from finance leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseInterestPaymentOnLiability" xlink:to="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Interest Payment On Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:type="locator" xlink:label="us-gaap_OperatingLeasePayments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating cash flows from operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasePayments" xlink:to="us-gaap_OperatingLeasePayments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Payments</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeasePrincipalPayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing cash flows from finance leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NonCashItemsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-cash items:</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NonCashItemsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Non Cash Items [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NonCashOperatingLeaseAndReMeasurementsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New operating leases and remeasurements, net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NonCashOperatingLeaseAndReMeasurementsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Non Cash Operating Lease And Re Measurements Net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NonCashFinanceLease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New finance leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NonCashFinanceLease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Non Cash Finance Lease</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:to="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liabilities Payments Due [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due After Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total undiscounted lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: imputed interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Undiscounted Excess Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total lease liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finance Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:to="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liabilities Payments Due [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due After Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total undiscounted lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:type="locator" xlink:label="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: imputed interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Undiscounted Excess Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_FinanceLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel">Total lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">ROU liabilities</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorSubleasePaymentsToBeReceivedDueNextTwelveMonths" xlink:type="locator" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor sublease payments to be received due next twelve months.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorSubleasePaymentsToBeReceivedDueNextTwelveMonths" xlink:to="unit_LessorSubleasePaymentsToBeReceivedDueNextTwelveMonths_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorSubleasePaymentsToBeReceivedDueYearTwo" xlink:type="locator" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor sublease payments to be received due year two.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorSubleasePaymentsToBeReceivedDueYearTwo" xlink:to="unit_LessorSubleasePaymentsToBeReceivedDueYearTwo_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorSubleasePaymentsToBeReceivedDueYearThree" xlink:type="locator" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor sublease payments to be received due year three.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorSubleasePaymentsToBeReceivedDueYearThree" xlink:to="unit_LessorSubleasePaymentsToBeReceivedDueYearThree_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorSubleasePaymentsToBeReceivedDueYearFour" xlink:type="locator" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor sublease payments to be received due year four.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorSubleasePaymentsToBeReceivedDueYearFour" xlink:to="unit_LessorSubleasePaymentsToBeReceivedDueYearFour_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorSubleasePaymentsToBeReceivedDueYearFive" xlink:type="locator" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearFive" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor sublease payments to be received due year five.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorSubleasePaymentsToBeReceivedDueYearFive" xlink:to="unit_LessorSubleasePaymentsToBeReceivedDueYearFive_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorSubleasePaymentsToBeReceivedDueYearThereafter" xlink:type="locator" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearThereafter" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor sublease payments to be received due year thereafter.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorSubleasePaymentsToBeReceivedDueYearThereafter" xlink:to="unit_LessorSubleasePaymentsToBeReceivedDueYearThereafter_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_LessorSubleasePaymentsToBeReceivedDue" xlink:type="locator" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDue" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor sublease payments to be received due.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LessorSubleasePaymentsToBeReceivedDue" xlink:to="unit_LessorSubleasePaymentsToBeReceivedDue_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Sublease Payments To Be Received Due Next Twelve Months</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Sublease Payments To Be Received Due Year Two</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Sublease Payments To Be Received Due Year Three</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Sublease Payments To Be Received Due Year Four</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Sublease Payments To Be Received Due Year Five</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDueYearThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Sublease Payments To Be Received Due Year Thereafter</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LessorSubleasePaymentsToBeReceivedDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Sublease Payments To Be Received Due</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_NumberOfMasterLeases" xlink:type="locator" xlink:label="unit_NumberOfMasterLeases" />
    <link:label xml:lang="en-US" xlink:label="unit_NumberOfMasterLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of master leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NumberOfMasterLeases" xlink:to="unit_NumberOfMasterLeases_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_NumberOfMasterLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of master leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NumberOfMasterLeases_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Master Leases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseExpirationDate1" xlink:type="locator" xlink:label="us-gaap_LeaseExpirationDate1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseExpirationDate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease expiration date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseExpirationDate1" xlink:to="us-gaap_LeaseExpirationDate1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseExpirationDate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Expiration Date1</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LeverageRatio" xlink:type="locator" xlink:label="unit_LeverageRatio" />
    <link:label xml:lang="en-US" xlink:label="unit_LeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Leverage ratio.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LeverageRatio" xlink:to="unit_LeverageRatio_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFaceAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance senior notes, stated percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Face Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total leverage ratio</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leverage Ratio</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_NewLeasesAgreementToFundGrowthCapitalImprovements" xlink:type="locator" xlink:label="unit_NewLeasesAgreementToFundGrowthCapitalImprovements" />
    <link:label xml:lang="en-US" xlink:label="unit_NewLeasesAgreementToFundGrowthCapitalImprovements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">New leases agreement to fund growth capital improvements.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NewLeasesAgreementToFundGrowthCapitalImprovements" xlink:to="unit_NewLeasesAgreementToFundGrowthCapitalImprovements_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_GrowthCapitalImprovementsExcludeLimitForMaintenanceOrRepairExpendituresExceptCostsIncurredForFiberReplacementToLeasedProperty" xlink:type="locator" xlink:label="unit_GrowthCapitalImprovementsExcludeLimitForMaintenanceOrRepairExpendituresExceptCostsIncurredForFiberReplacementToLeasedProperty" />
    <link:label xml:lang="en-US" xlink:label="unit_GrowthCapitalImprovementsExcludeLimitForMaintenanceOrRepairExpendituresExceptCostsIncurredForFiberReplacementToLeasedProperty_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Growth capital improvements exclude limit for maintenance or repair expenditures except costs incurred for fiber replacement to leased property.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_GrowthCapitalImprovementsExcludeLimitForMaintenanceOrRepairExpendituresExceptCostsIncurredForFiberReplacementToLeasedProperty" xlink:to="unit_GrowthCapitalImprovementsExcludeLimitForMaintenanceOrRepairExpendituresExceptCostsIncurredForFiberReplacementToLeasedProperty_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSix" xlink:type="locator" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSix" />
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSix_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future annual commitment payments for agreements due year six.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSix" xlink:to="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSix_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearTwoThroughFive" xlink:type="locator" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearTwoThroughFive" />
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearTwoThroughFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future annual commitment payments for agreements due year two through five.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearTwoThroughFive" xlink:to="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearTwoThroughFive_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSeven" xlink:type="locator" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSeven" />
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSeven_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future annual commitment payments for agreements due year seven.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSeven" xlink:to="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSeven_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearEightThroughTen" xlink:type="locator" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearEightThroughTen" />
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearEightThroughTen_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Future annual commitment payments for agreements due year eight through ten.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearEightThroughTen" xlink:to="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearEightThroughTen_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_NewLeasesAgreementToFundGrowthCapitalImprovements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New lease, aggregate reimbursements made for certain growth capital improvements</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NewLeasesAgreementToFundGrowthCapitalImprovements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">New Leases Agreement To Fund Growth Capital Improvements</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_GrowthCapitalImprovementsExcludeLimitForMaintenanceOrRepairExpendituresExceptCostsIncurredForFiberReplacementToLeasedProperty_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Growth Capital Improvements will exclude maintenance or repair expenditures except for costs incurred for fiber replacements to CLEC MLA leased property</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_GrowthCapitalImprovementsExcludeLimitForMaintenanceOrRepairExpendituresExceptCostsIncurredForFiberReplacementToLeasedProperty_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Growth Capital Improvements Exclude Limit For Maintenance Or Repair Expenditures Except Costs Incurred For Fiber Replacement To Leased Property</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearTwoThroughFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future annual commitment payments for agreements due year two through five</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearTwoThroughFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Annual Commitment Payments For Agreements Due Year Two Through Five</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSix_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future annual commitment payments for agreements due year six</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSix_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Annual Commitment Payments For Agreements Due Year Six</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSeven_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future annual commitment payments for agreements due year seven</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearSeven_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Annual Commitment Payments For Agreements Due Year Seven</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearEightThroughTen_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future annual commitment payments for agreements due year eight through ten</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FutureAnnualCommitmentPaymentsForAgreementsDueYearEightThroughTen_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Future Annual Commitment Payments For Agreements Due Year Eight Through Ten</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CumulativeGrowthCapitalImprovementsAnnualReimbursementCommitmentAmountLimitInSubsequentPeriod" xlink:type="locator" xlink:label="unit_CumulativeGrowthCapitalImprovementsAnnualReimbursementCommitmentAmountLimitInSubsequentPeriod" />
    <link:label xml:lang="en-US" xlink:label="unit_CumulativeGrowthCapitalImprovementsAnnualReimbursementCommitmentAmountLimitInSubsequentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cumulative growth capital improvements annual reimbursement commitment amount limit in subsequent period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CumulativeGrowthCapitalImprovementsAnnualReimbursementCommitmentAmountLimitInSubsequentPeriod" xlink:to="unit_CumulativeGrowthCapitalImprovementsAnnualReimbursementCommitmentAmountLimitInSubsequentPeriod_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_AnnualRentAdjustmentForGrowthCapitalFunding" xlink:type="locator" xlink:label="unit_AnnualRentAdjustmentForGrowthCapitalFunding" />
    <link:label xml:lang="en-US" xlink:label="unit_AnnualRentAdjustmentForGrowthCapitalFunding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Annual rent adjustment for growth capital funding.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_AnnualRentAdjustmentForGrowthCapitalFunding" xlink:to="unit_AnnualRentAdjustmentForGrowthCapitalFunding_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RateUsedForRentPercentage" xlink:type="locator" xlink:label="unit_RateUsedForRentPercentage" />
    <link:label xml:lang="en-US" xlink:label="unit_RateUsedForRentPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Rate used for rent percentage.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RateUsedForRentPercentage" xlink:to="unit_RateUsedForRentPercentage_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_MaximumFundingRightsAllocatedPerYearUponTransferOfInterestsUnderNewLease" xlink:type="locator" xlink:label="unit_MaximumFundingRightsAllocatedPerYearUponTransferOfInterestsUnderNewLease" />
    <link:label xml:lang="en-US" xlink:label="unit_MaximumFundingRightsAllocatedPerYearUponTransferOfInterestsUnderNewLease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Maximum funding rights allocated per year upon transfer of interests under new lease.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_MaximumFundingRightsAllocatedPerYearUponTransferOfInterestsUnderNewLease" xlink:to="unit_MaximumFundingRightsAllocatedPerYearUponTransferOfInterestsUnderNewLease_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CumulativeGrowthCapitalImprovementsAnnualReimbursementCommitmentAmountLimitInSubsequentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative growth capital improvements annual reimbursement commitment amount limit in subsequent period</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CumulativeGrowthCapitalImprovementsAnnualReimbursementCommitmentAmountLimitInSubsequentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Growth Capital Improvements Annual Reimbursement Commitment Amount Limit In Subsequent Period</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AnnualRentAdjustmentForGrowthCapitalFunding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Annual rent adjustment for Growth Capital Funding</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AnnualRentAdjustmentForGrowthCapitalFunding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Annual Rent Adjustment For Growth Capital Funding</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RateUsedForRentPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rate used for rent percentage</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RateUsedForRentPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Rate Used For Rent Percentage</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MaximumFundingRightsAllocatedPerYearUponTransferOfInterestsUnderNewLease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum funding rights allocated per year upon transfer of interests under Windstream lease</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MaximumFundingRightsAllocatedPerYearUponTransferOfInterestsUnderNewLease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Maximum Funding Rights Allocated Per Year Upon Transfer Of Interests Under New Lease</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_AccruedInterestRateForBorrowing" xlink:type="locator" xlink:label="unit_AccruedInterestRateForBorrowing" />
    <link:label xml:lang="en-US" xlink:label="unit_AccruedInterestRateForBorrowing_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued interest rate for borrowing.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_AccruedInterestRateForBorrowing" xlink:to="unit_AccruedInterestRateForBorrowing_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_NewLeasesAgreementToFundGrowthCapitalImprovementsLoanAmount" xlink:type="locator" xlink:label="unit_NewLeasesAgreementToFundGrowthCapitalImprovementsLoanAmount" />
    <link:label xml:lang="en-US" xlink:label="unit_NewLeasesAgreementToFundGrowthCapitalImprovementsLoanAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">New leases agreement to fund growth capital improvements loan amount.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NewLeasesAgreementToFundGrowthCapitalImprovementsLoanAmount" xlink:to="unit_NewLeasesAgreementToFundGrowthCapitalImprovementsLoanAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_AccruedInterestRateForBorrowing_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest rate for borrowing</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AccruedInterestRateForBorrowing_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Interest Rate For Borrowing</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NewLeasesAgreementToFundGrowthCapitalImprovementsLoanAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Windstream lease, aggregate reimbursements made for certain growth capital improvements, loan amount</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NewLeasesAgreementToFundGrowthCapitalImprovementsLoanAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">New Leases Agreement To Fund Growth Capital Improvements Loan Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncentiveToLessee" xlink:type="locator" xlink:label="us-gaap_IncentiveToLessee" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncentiveToLessee_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease incentive</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncentiveToLessee" xlink:to="us-gaap_IncentiveToLessee_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncentiveToLessee_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incentive To Lessee</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_PaymentsToAcquireAssets" xlink:type="locator" xlink:label="unit_PaymentsToAcquireAssets" />
    <link:label xml:lang="en-US" xlink:label="unit_PaymentsToAcquireAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments to acquire assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PaymentsToAcquireAssets" xlink:to="unit_PaymentsToAcquireAssets_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_IndefeasibleRightOfUseAssetAndAccessRightsOfFiberStrandMiles" xlink:type="locator" xlink:label="unit_IndefeasibleRightOfUseAssetAndAccessRightsOfFiberStrandMiles" />
    <link:label xml:lang="en-US" xlink:label="unit_IndefeasibleRightOfUseAssetAndAccessRightsOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Indefeasible right of use asset and access rights of fiber strand miles.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_IndefeasibleRightOfUseAssetAndAccessRightsOfFiberStrandMiles" xlink:to="unit_IndefeasibleRightOfUseAssetAndAccessRightsOfFiberStrandMiles_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RightOfUseAssetAreConveyedOfFiberStrandMiles" xlink:type="locator" xlink:label="unit_RightOfUseAssetAreConveyedOfFiberStrandMiles" />
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAreConveyedOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Right of use asset are conveyed of fiber strand miles.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RightOfUseAssetAreConveyedOfFiberStrandMiles" xlink:to="unit_RightOfUseAssetAreConveyedOfFiberStrandMiles_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RightOfUseAssetAreConveyedOfFiberRouteMiles" xlink:type="locator" xlink:label="unit_RightOfUseAssetAreConveyedOfFiberRouteMiles" />
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAreConveyedOfFiberRouteMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Right of use asset are conveyed of fiber route miles.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RightOfUseAssetAreConveyedOfFiberRouteMiles" xlink:to="unit_RightOfUseAssetAreConveyedOfFiberRouteMiles_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_EarningsBeforeInterestTaxesDepreciationAndAmortizationFromIndefeasibleRightsOfUse" xlink:type="locator" xlink:label="unit_EarningsBeforeInterestTaxesDepreciationAndAmortizationFromIndefeasibleRightsOfUse" />
    <link:label xml:lang="en-US" xlink:label="unit_EarningsBeforeInterestTaxesDepreciationAndAmortizationFromIndefeasibleRightsOfUse_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Earnings before interest, taxes, depreciation, and amortization from indefeasible rights of use.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_EarningsBeforeInterestTaxesDepreciationAndAmortizationFromIndefeasibleRightsOfUse" xlink:to="unit_EarningsBeforeInterestTaxesDepreciationAndAmortizationFromIndefeasibleRightsOfUse_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Business Acquisitions By Acquisition [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Business Acquisitions By Acquisition [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets by Major Class</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets By Major Class [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets, Major Class Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Major Class Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CustomerContractsMember" xlink:type="locator" xlink:label="us-gaap_CustomerContractsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contracts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerContractsMember" xlink:to="us-gaap_CustomerContractsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Customer Contracts [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_UnderlyingRightsMember" xlink:type="locator" xlink:label="unit_UnderlyingRightsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_UnderlyingRightsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Underlying Rights.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_UnderlyingRightsMember" xlink:to="unit_UnderlyingRightsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_UnderlyingRightsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Underlying Rights</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_UnderlyingRightsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Underlying Rights [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_MidwestFiberNetworkAssetsMember" xlink:type="locator" xlink:label="unit_MidwestFiberNetworkAssetsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_MidwestFiberNetworkAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Midwest fiber network assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_MidwestFiberNetworkAssetsMember" xlink:to="unit_MidwestFiberNetworkAssetsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_MidwestFiberNetworkAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Propco</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MidwestFiberNetworkAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Midwest Fiber Network Assets [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_MacquarieInfrastructurePartnersMember" xlink:type="locator" xlink:label="unit_MacquarieInfrastructurePartnersMember" />
    <link:label xml:lang="en-US" xlink:label="unit_MacquarieInfrastructurePartnersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Macquarie infrastructure partners.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_MacquarieInfrastructurePartnersMember" xlink:to="unit_MacquarieInfrastructurePartnersMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_MacquarieInfrastructurePartnersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MIP</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MacquarieInfrastructurePartnersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Macquarie Infrastructure Partners [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_UnitiFibersMidwestMember" xlink:type="locator" xlink:label="unit_UnitiFibersMidwestMember" />
    <link:label xml:lang="en-US" xlink:label="unit_UnitiFibersMidwestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Uniti Fiber&#8217;s Midwest.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_UnitiFibersMidwestMember" xlink:to="unit_UnitiFibersMidwestMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_UnitiFibersMidwestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Uniti Fibers Midwest</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_UnitiFibersMidwestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Uniti Fibers Midwest [Member]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis" />
    <link:label xml:lang="en-US" xlink:label="dei_LegalEntityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal Entity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LegalEntityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Legal Entity [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indefinite-lived Intangible Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefinite Lived Intangible Assets By Major Class [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indefinite-lived Intangible Assets, Major Class Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefinite Lived Intangible Assets Major Class Name [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_RightsOfWayMember" xlink:type="locator" xlink:label="unit_RightsOfWayMember" />
    <link:label xml:lang="en-US" xlink:label="unit_RightsOfWayMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Rights of way.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RightsOfWayMember" xlink:to="unit_RightsOfWayMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_RightsOfWayMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rights of Way</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RightsOfWayMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Rights Of Way [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeasesAcquiredInPlaceMember" xlink:type="locator" xlink:label="us-gaap_LeasesAcquiredInPlaceMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeasesAcquiredInPlaceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">In-place Lease</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeasesAcquiredInPlaceMember" xlink:to="us-gaap_LeasesAcquiredInPlaceMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeasesAcquiredInPlaceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Leases Acquired In Place [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_UnitiTowersBusinessMember" xlink:type="locator" xlink:label="unit_UnitiTowersBusinessMember" />
    <link:label xml:lang="en-US" xlink:label="unit_UnitiTowersBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Uniti Towers Business.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_UnitiTowersBusinessMember" xlink:to="unit_UnitiTowersBusinessMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_UnitiTowersBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Uniti Towers Business</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_UnitiTowersBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Uniti Towers Business [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LatinAmericaMember" xlink:type="locator" xlink:label="srt_LatinAmericaMember" />
    <link:label xml:lang="en-US" xlink:label="srt_LatinAmericaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Latin American</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_LatinAmericaMember" xlink:to="srt_LatinAmericaMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_LatinAmericaMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Latin America [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_JKMConsultingIncM2ConnectionsMember" xlink:type="locator" xlink:label="unit_JKMConsultingIncM2ConnectionsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_JKMConsultingIncM2ConnectionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">JKM Consulting Inc. (M2 Connections)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_JKMConsultingIncM2ConnectionsMember" xlink:to="unit_JKMConsultingIncM2ConnectionsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_JKMConsultingIncM2ConnectionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">JKM Consulting Inc.</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_JKMConsultingIncM2ConnectionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">J K M Consulting Inc M2 Connections [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:type="locator" xlink:label="us-gaap_CustomerRelationshipsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Relationships</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerRelationshipsMember" xlink:to="us-gaap_CustomerRelationshipsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Customer Relationships [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_BusinessAcquisitionLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PaymentsToAcquireAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payments to acquire assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PaymentsToAcquireAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IndefeasibleRightOfUseAssetAndAccessRightsOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dark fiber indefeasible rights of use contracts and access rights</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IndefeasibleRightOfUseAssetAndAccessRightsOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefeasible Right Of Use Asset And Access Rights Of Fiber Strand Miles</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAreConveyedOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fiber strand miles of fiber assets conveyed</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAreConveyedOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Right Of Use Asset Are Conveyed Of Fiber Strand Miles</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAreConveyedOfFiberRouteMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fiber route miles of fiber assets conveyed</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAreConveyedOfFiberRouteMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Right Of Use Asset Are Conveyed Of Fiber Route Miles</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EarningsBeforeInterestTaxesDepreciationAndAmortizationFromIndefeasibleRightsOfUse_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">IRU annual EBITDA from fiber strand miles conveyed</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EarningsBeforeInterestTaxesDepreciationAndAmortizationFromIndefeasibleRightsOfUse_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Before Interest Taxes Depreciation And Amortization From Indefeasible Rights Of Use</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_BusinessCombinationConsiderationSettlementExpenses" xlink:type="locator" xlink:label="unit_BusinessCombinationConsiderationSettlementExpenses" />
    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationConsiderationSettlementExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination consideration settlement expenses.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_BusinessCombinationConsiderationSettlementExpenses" xlink:to="unit_BusinessCombinationConsiderationSettlementExpenses_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consideration:</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Consideration Transferred [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PaymentsToAcquireAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Asset Purchase Agreement</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of settlement obligation</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Consideration Transferred Liabilities Incurred</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total consideration</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Consideration Transferred1</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Receivables</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" />
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    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAccruedExpensesAndOtherLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accounts payable, accrued expenses and other liabilities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred revenue</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationRecognizedIdentifiableLiabilitiesAcquiredAndLiabilitiesAssumedIntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Intangible liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationRecognizedIdentifiableLiabilitiesAcquiredAndLiabilitiesAssumedIntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Liabilities Acquired And Liabilities Assumed Intangible Liabilities Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total assets acquired, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationConsiderationSettlementExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement expense</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationConsiderationSettlementExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Consideration Settlement Expenses</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset" xlink:type="locator" xlink:label="unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset" />
    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquired right of use assets.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:type="locator" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" />
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    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquired right of use assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Right Of Use Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation" xlink:type="locator" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net assets value</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedInterestFairValueDisclosure" xlink:type="locator" xlink:label="us-gaap_RetainedInterestFairValueDisclosure" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_RetainedInterestFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Retained Interest Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax" xlink:type="locator" xlink:label="us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_IncrementalEarnOutPaymentsEstimatedToBeReceived" xlink:type="locator" xlink:label="unit_IncrementalEarnOutPaymentsEstimatedToBeReceived" />
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    <link:label xml:lang="en-US" xlink:label="unit_IncrementalEarnOutPaymentsEstimatedToBeReceived_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incremental earn-out payments, estimated to be received</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IncrementalEarnOutPaymentsEstimatedToBeReceived_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Earn Out Payments Estimated To Be Received</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_NumberOfFiberStrandMiles" xlink:type="locator" xlink:label="unit_NumberOfFiberStrandMiles" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_ProceedsFromDivestitureOfBusinessesAndPrepaidRent" xlink:type="locator" xlink:label="unit_ProceedsFromDivestitureOfBusinessesAndPrepaidRent" />
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    <link:label xml:lang="en-US" xlink:label="unit_NumberOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of fiber stand miles</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase consideration</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for business acquisition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredOther1" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredOther1" />
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    <link:label xml:lang="en-US" xlink:label="unit_ProceedsFromDivestitureOfBusinessesAndPrepaidRent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of operation for cash consideration and prepaid rent received</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ProceedsFromDivestitureOfBusinessesAndPrepaidRent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Divestiture Of Businesses And Prepaid Rent</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseLiabilities" xlink:type="locator" xlink:label="unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseLiabilities" />
    <link:label xml:lang="en-US" xlink:label="unit_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquired right of use liabilities.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments" xlink:type="locator" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (decrease) of purchase price and goodwill</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_OperatingIncomeLoss" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating income (loss)</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationAcquisitionRelatedCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Acquisition Related Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionsProFormaRevenue" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionsProFormaRevenue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pro forma net income (loss)</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Net Income Loss</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LeaseAgreementsTerm" xlink:type="locator" xlink:label="unit_LeaseAgreementsTerm" />
    <link:label xml:lang="en-US" xlink:label="unit_LeaseAgreementsTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease agreements, term.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LeaseAgreementsTerm" xlink:to="unit_LeaseAgreementsTerm_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_ManagementFeeReceivable" xlink:type="locator" xlink:label="unit_ManagementFeeReceivable" />
    <link:label xml:lang="en-US" xlink:label="unit_ManagementFeeReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Management fee receivable.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ManagementFeeReceivable" xlink:to="unit_ManagementFeeReceivable_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_AnnualEscalator" xlink:type="locator" xlink:label="unit_AnnualEscalator" />
    <link:label xml:lang="en-US" xlink:label="unit_AnnualEscalator_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Annual escalator.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_AnnualEscalator" xlink:to="unit_AnnualEscalator_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:type="locator" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" />
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    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CounterpartyNameAxis" xlink:type="locator" xlink:label="srt_CounterpartyNameAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_CounterpartyNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Counterparty Name</link:label>
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    <link:label xml:lang="en-US" xlink:label="srt_CounterpartyNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Counterparty Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:type="locator" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Counterparty Name</link:label>
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    <link:label xml:lang="en-US" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Repurchase Agreement Counterparty Name [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_EverstreamSolutionsLLCMember" xlink:type="locator" xlink:label="unit_EverstreamSolutionsLLCMember" />
    <link:label xml:lang="en-US" xlink:label="unit_EverstreamSolutionsLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Everstream Solutions LLC.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_EverstreamSolutionsLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Everstream Solutions LLC</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EverstreamSolutionsLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Everstream Solutions L L C [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_UnitiFiberNortheastOperationsAndCertainDarkFiberIndefeasibleRightsOfUseContractsMember" xlink:type="locator" xlink:label="unit_UnitiFiberNortheastOperationsAndCertainDarkFiberIndefeasibleRightsOfUseContractsMember" />
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    <link:label xml:lang="en-US" xlink:label="unit_UnitiFiberNortheastOperationsAndCertainDarkFiberIndefeasibleRightsOfUseContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Uniti Fiber Northeast Operations And Certain Dark Fiber Indefeasible Rights Of Use Contracts [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_IndefeasibleRightsOfUseLeaseAgreementsMember" xlink:type="locator" xlink:label="unit_IndefeasibleRightsOfUseLeaseAgreementsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_IndefeasibleRightsOfUseLeaseAgreementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Indefeasible rights of use lease agreements.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_IndefeasibleRightsOfUseLeaseAgreementsMember" xlink:to="unit_IndefeasibleRightsOfUseLeaseAgreementsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_IndefeasibleRightsOfUseLeaseAgreementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">IRU Lease Agreements</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IndefeasibleRightsOfUseLeaseAgreementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefeasible Rights Of Use Lease Agreements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:type="locator" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" />
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    <link:label xml:lang="en-US" xlink:label="unit_LeaseAgreementsTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease agreements, term</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LeaseAgreementsTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Agreements Term</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_AnnualEscalator_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Annual escalator</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AnnualEscalator_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Annual Escalator</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationsLeaseLiabilities" xlink:type="locator" xlink:label="unit_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationsLeaseLiabilities" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_DisposalGroupIncludingDiscontinuedOperationsIntangibleLiabilitiesNet" xlink:type="locator" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsIntangibleLiabilitiesNet" />
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsIntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operations intangible liabilities, net.</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, plant and equipment, net</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible assets, net</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationAbstract" />
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    <link:label xml:lang="en-US" xlink:label="unit_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationsLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationsLeaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Of Disposal Group Including Discontinued Operations Lease Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsIntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible liabilities, net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DisposalGroupIncludingDiscontinuedOperationsIntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operations Intangible Liabilities Net</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsTable" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_BBFiberHoldingsLLCMember" xlink:type="locator" xlink:label="unit_BBFiberHoldingsLLCMember" />
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    <link:label xml:lang="en-US" xlink:label="unit_BBFiberHoldingsLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">B B Fiber Holdings L L C [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_HarmoniTowersLPMember" xlink:type="locator" xlink:label="unit_HarmoniTowersLPMember" />
    <link:label xml:lang="en-US" xlink:label="unit_HarmoniTowersLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Harmoni Towers LP.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_HarmoniTowersLPMember" xlink:to="unit_HarmoniTowersLPMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_HarmoniTowersLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Harmoni</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_HarmoniTowersLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Harmoni Towers L P [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesAxis" />
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    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember" xlink:type="locator" xlink:label="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity Not Primary Beneficiary [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesFvNiCost" xlink:type="locator" xlink:label="us-gaap_EquitySecuritiesFvNiCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EquitySecuritiesFvNiCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate investment in equity method</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableInterestEntityOwnershipPercentage" xlink:type="locator" xlink:label="us-gaap_VariableInterestEntityOwnershipPercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableInterestEntityOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of ownership interest</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableInterestEntityOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity Ownership Percentage</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_VariableInterestEntityWithLongTermTripleNetLease" xlink:type="locator" xlink:label="unit_VariableInterestEntityWithLongTermTripleNetLease" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_VariableInterestEntityEconomicInterestPercentage" xlink:type="locator" xlink:label="unit_VariableInterestEntityEconomicInterestPercentage" />
    <link:label xml:lang="en-US" xlink:label="unit_VariableInterestEntityEconomicInterestPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Variable interest entity economic interest percentage.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_VariableInterestEntityEconomicInterestPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity Economic Interest Percentage</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_TransitionServiceFeesEarned" xlink:type="locator" xlink:label="unit_TransitionServiceFeesEarned" />
    <link:label xml:lang="en-US" xlink:label="unit_TransitionServiceFeesEarned_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Transition service fees earned.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements Fair Value Hierarchy [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel1Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Quoted Prices in Active Markets (Level 1)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Inputs Level1 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel2Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prices with Other Observable Inputs (Level 2)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Inputs Level2 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel3Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prices with Unobservable Inputs (Level 3)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel3Member" xlink:to="us-gaap_FairValueInputsLevel3Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Inputs Level3 [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_SeniorSecuredTermLoanBFacilityMember" xlink:type="locator" xlink:label="unit_SeniorSecuredTermLoanBFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="unit_SeniorSecuredTermLoanBFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Senior secured term loan b facility.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SeniorSecuredTermLoanBFacilityMember" xlink:to="unit_SeniorSecuredTermLoanBFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_SeniorSecuredTermLoanBFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior Secured Term Loan B Facility</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SeniorSecuredTermLoanBFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Senior Secured Term Loan B Facility [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_SixPercentageSeniorSecuredNotesDueAprilFifteenTwoThousandTwentyThreeMember" xlink:type="locator" xlink:label="unit_SixPercentageSeniorSecuredNotesDueAprilFifteenTwoThousandTwentyThreeMember" />
    <link:label xml:lang="en-US" xlink:label="unit_SixPercentageSeniorSecuredNotesDueAprilFifteenTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Six percentage senior secured notes due April fifteen two thousand twenty three.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SixPercentageSeniorSecuredNotesDueAprilFifteenTwoThousandTwentyThreeMember" xlink:to="unit_SixPercentageSeniorSecuredNotesDueAprilFifteenTwoThousandTwentyThreeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_SixPercentageSeniorSecuredNotesDueAprilFifteenTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">6.00% Senior Secured Notes</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SixPercentageSeniorSecuredNotesDueAprilFifteenTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Six Percentage Senior Secured Notes Due April Fifteen Two Thousand Twenty Three [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_EightPointTwoFivePercentageSeniorUnsecuredNotesDueOctoberFifteenTwoThousandTwentyThreeMember" xlink:type="locator" xlink:label="unit_EightPointTwoFivePercentageSeniorUnsecuredNotesDueOctoberFifteenTwoThousandTwentyThreeMember" />
    <link:label xml:lang="en-US" xlink:label="unit_EightPointTwoFivePercentageSeniorUnsecuredNotesDueOctoberFifteenTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Eight point two five percentage senior unsecured notes due October fifteen two thousand twenty three.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_EightPointTwoFivePercentageSeniorUnsecuredNotesDueOctoberFifteenTwoThousandTwentyThreeMember" xlink:to="unit_EightPointTwoFivePercentageSeniorUnsecuredNotesDueOctoberFifteenTwoThousandTwentyThreeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_EightPointTwoFivePercentageSeniorUnsecuredNotesDueOctoberFifteenTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">8.25% Senior Unsecured Notes</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EightPointTwoFivePercentageSeniorUnsecuredNotesDueOctoberFifteenTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Eight Point Two Five Percentage Senior Unsecured Notes Due October Fifteen Two Thousand Twenty Three [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_SevenPointOneTwoFivePercentageSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyFourMember" xlink:type="locator" xlink:label="unit_SevenPointOneTwoFivePercentageSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyFourMember" />
    <link:label xml:lang="en-US" xlink:label="unit_SevenPointOneTwoFivePercentageSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Seven point one two five percentage senior unsecured notes due December fifteen two thousand twenty four.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SevenPointOneTwoFivePercentageSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyFourMember" xlink:to="unit_SevenPointOneTwoFivePercentageSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyFourMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_SevenPointOneTwoFivePercentageSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">7.125% Senior Unsecured Notes</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SevenPointOneTwoFivePercentageSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Seven Point One Two Five Percentage Senior Unsecured Notes Due December Fifteen Two Thousand Twenty Four [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FourPercentageExchangeableSeniorUnsecuredNotesDueJuneFifteenTwoThousandTwentyFourMember" xlink:type="locator" xlink:label="unit_FourPercentageExchangeableSeniorUnsecuredNotesDueJuneFifteenTwoThousandTwentyFourMember" />
    <link:label xml:lang="en-US" xlink:label="unit_FourPercentageExchangeableSeniorUnsecuredNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Four percentage exchangeable senior unsecured notes due June fifteen two thousand twenty four.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FourPercentageExchangeableSeniorUnsecuredNotesDueJuneFifteenTwoThousandTwentyFourMember" xlink:to="unit_FourPercentageExchangeableSeniorUnsecuredNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_FourPercentageExchangeableSeniorUnsecuredNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Exchangeable Senior Unsecured Notes - 4.00%, due June 15, 2024</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FourPercentageExchangeableSeniorUnsecuredNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Four Percentage Exchangeable Senior Unsecured Notes Due June Fifteen Two Thousand Twenty Four [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsFairValueDisclosureAbstract" xlink:to="us-gaap_AssetsFairValueDisclosureAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets Fair Value Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssets" xlink:type="locator" xlink:label="us-gaap_DerivativeAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAssets" xlink:to="us-gaap_DerivativeAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:type="locator" xlink:label="us-gaap_AssetsFairValueDisclosure" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsFairValueDisclosure" xlink:to="us-gaap_AssetsFairValueDisclosure_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesFairValueDisclosureAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:to="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Fair Value Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesPayableFairValueDisclosure" xlink:type="locator" xlink:label="us-gaap_NotesPayableFairValueDisclosure" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NotesPayableFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior notes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayableFairValueDisclosure" xlink:to="us-gaap_NotesPayableFairValueDisclosure_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NotesPayableFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LinesOfCreditFairValueDisclosure" xlink:type="locator" xlink:label="us-gaap_LinesOfCreditFairValueDisclosure" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LinesOfCreditFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior secured loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LinesOfCreditFairValueDisclosure" xlink:to="us-gaap_LinesOfCreditFairValueDisclosure_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LinesOfCreditFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lines Of Credit Fair Value Disclosure</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SettlementPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Settlement payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:type="locator" xlink:label="us-gaap_LiabilitiesFairValueDisclosure" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesFairValueDisclosure" xlink:to="us-gaap_LiabilitiesFairValueDisclosure_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Fair Value Disclosure</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FourPercentageExchangeableSeniorUnsecuredNotesDueJuneFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exchangeable Senior Unsecured Notes - 4.00%, due June 15, 2024</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansPayableFairValueDisclosure" xlink:type="locator" xlink:label="us-gaap_LoansPayableFairValueDisclosure" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LoansPayableFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior secured loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansPayableFairValueDisclosure" xlink:to="us-gaap_LoansPayableFairValueDisclosure_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LoansPayableFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payable Fair Value Disclosure</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_TowerCloudIncMember" xlink:type="locator" xlink:label="unit_TowerCloudIncMember" />
    <link:label xml:lang="en-US" xlink:label="unit_TowerCloudIncMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Tower Cloud Inc.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_TowerCloudIncMember" xlink:to="unit_TowerCloudIncMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_TowerCloudIncMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tower Cloud, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_TowerCloudIncMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Tower Cloud Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel">Principal amount of notes and other debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:type="locator" xlink:label="us-gaap_LongTermDebtFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes and other debt, fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtFairValue" xlink:to="us-gaap_LongTermDebtFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Fair Value</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_PaymentsOfCashWillBeMadeInCaseOfEmergenceFromBankruptcy" xlink:type="locator" xlink:label="unit_PaymentsOfCashWillBeMadeInCaseOfEmergenceFromBankruptcy" />
    <link:label xml:lang="en-US" xlink:label="unit_PaymentsOfCashWillBeMadeInCaseOfEmergenceFromBankruptcy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments of cash will be made in case of emergence from bankruptcy.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PaymentsOfCashWillBeMadeInCaseOfEmergenceFromBankruptcy" xlink:to="unit_PaymentsOfCashWillBeMadeInCaseOfEmergenceFromBankruptcy_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_NumberOfInstallments" xlink:type="locator" xlink:label="unit_NumberOfInstallments" />
    <link:label xml:lang="en-US" xlink:label="unit_NumberOfInstallments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of installments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NumberOfInstallments" xlink:to="unit_NumberOfInstallments_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_PaymentsOfCashWillBeMadeInCaseOfEmergenceFromBankruptcy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash payment in equal installments emergence from bankruptcy</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PaymentsOfCashWillBeMadeInCaseOfEmergenceFromBankruptcy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments Of Cash Will Be Made In Case Of Emergence From Bankruptcy</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NumberOfInstallments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of installments</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NumberOfInstallments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Installments</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SettlementPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveTerseLabel">Fair value of settlement payable</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Estimated fair value of future contingent consideration</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">(Gain)/Loss included in earnings</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Contingent consideration, ending balance</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, plant and equipment, gross</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Gross</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfGoodwillTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfGoodwillTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Goodwill [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfGoodwillTable" xlink:to="us-gaap_ScheduleOfGoodwillTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfGoodwillTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Goodwill [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillLineItems" xlink:type="locator" xlink:label="us-gaap_GoodwillLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillLineItems" xlink:to="us-gaap_GoodwillLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Goodwill at December 31, 2018</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Goodwill purchase accounting adjustments</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_GoodwillAcquiredAndDisposedDuringPeriodNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill associated with 2019 acquisitions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_GoodwillAcquiredAndDisposedDuringPeriodNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Acquired And Disposed During Period Net</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GoodwillImpairmentLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Good impairment (Note 3)</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_GoodwillReclassifiedToHeldForSale_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Goodwill reclassified to held for sale</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Goodwill at December 31, 2019</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FiniteLivedIntangibleLiabilitiesGross" xlink:type="locator" xlink:label="unit_FiniteLivedIntangibleLiabilitiesGross" />
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite-lived intangible liabilities gross.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FiniteLivedIntangibleLiabilitiesGross" xlink:to="unit_FiniteLivedIntangibleLiabilitiesGross_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization" xlink:type="locator" xlink:label="unit_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization" />
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite-lived intangible liabilities accumulated amortization.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization" xlink:to="unit_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_FiniteLivedIntangibleLiabilitiesNet" xlink:type="locator" xlink:label="unit_FiniteLivedIntangibleLiabilitiesNet" />
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite-lived intangible liabilities, net.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FiniteLivedIntangibleLiabilitiesNet" xlink:to="unit_FiniteLivedIntangibleLiabilitiesNet_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:type="locator" xlink:label="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesLineItems" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of indefinite and finite lived intangible assets and liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:to="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesLineItems_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesTable" xlink:type="locator" xlink:label="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesTable" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of indefinite and finite lived intangible assets and liabilities table.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesTable" xlink:to="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Indefinite And Finite Lived Intangible Assets And Liabilities [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Indefinite And Finite Lived Intangible Assets And Liabilities [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CustomerListsMember" xlink:type="locator" xlink:label="us-gaap_CustomerListsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerListsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Customer Lists</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerListsMember" xlink:to="us-gaap_CustomerListsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerListsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Customer Lists [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_BelowMarketLeasesMember" xlink:type="locator" xlink:label="unit_BelowMarketLeasesMember" />
    <link:label xml:lang="en-US" xlink:label="unit_BelowMarketLeasesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">below market leases.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_BelowMarketLeasesMember" xlink:to="unit_BelowMarketLeasesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_BelowMarketLeasesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquired Below-market Leases</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_BelowMarketLeasesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Below Market Leases [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradeNamesMember" xlink:type="locator" xlink:label="us-gaap_TradeNamesMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TradeNamesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trade Names</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TradeNamesMember" xlink:to="us-gaap_TradeNamesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TradeNamesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trade Names [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Indefinite And Finite Lived Intangible Assets And Liabilities [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ScheduleOfIndefiniteAndFiniteLivedIntangibleAssetsAndLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Indefinite And Finite Lived Intangible Assets And Liabilities [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indefinite life intangible assets, Original Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Indefinite Lived Intangible Assets Excluding Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite life intangible assets, Original Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsGross" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill" xlink:type="locator" xlink:label="us-gaap_IntangibleAssetsGrossExcludingGoodwill" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IntangibleAssetsGrossExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total intangible assets, Original Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntangibleAssetsGrossExcludingGoodwill" xlink:to="us-gaap_IntangibleAssetsGrossExcludingGoodwill_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IntangibleAssetsGrossExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Assets Gross Excluding Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: accumulated amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Accumulated Amortization</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total intangible assets, net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite life intangible liabilities, Original Cost</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Liabilities Gross</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: accumulated amortization</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Liabilities Accumulated Amortization</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total intangible liabilities, net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Liabilities Net</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_FiniteLivedIntangibleLiabilitiesRemainingAmortizationPeriod" xlink:type="locator" xlink:label="unit_FiniteLivedIntangibleLiabilitiesRemainingAmortizationPeriod" />
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesRemainingAmortizationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite lived intangible liabilities remaining amortization period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_FiniteLivedIntangibleLiabilitiesRemainingAmortizationPeriod" xlink:to="unit_FiniteLivedIntangibleLiabilitiesRemainingAmortizationPeriod_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining weighted average amortization period of intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1" xlink:to="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Remaining Amortization Period1</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesRemainingAmortizationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining weighted average amortization period of intangible liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_FiniteLivedIntangibleLiabilitiesRemainingAmortizationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Liabilities Remaining Amortization Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_AmortizationOfIntangibleAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Intangible Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated amortization expense for 2021</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated amortization expense for 2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated amortization expense for 2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated amortization expense for 2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated amortization expense for 2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtDisclosureAbstract_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SevenPointEightSevenFivePercentageSeniorSecuredNotesDueFebruaryFifteenTwoThousandTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Senior Secured Notes - 7.875% Due February 15, 2025</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EightPointTwoFivePercentageSeniorUnsecuredNotesDueOctoberFifteenTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Senior Unsecured Notes - 8.25% Due October 15, 2023</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SixPercentageSeniorSecuredNotesDueAprilFifteenTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Senior Secured Notes - 6.00% Due April 15, 2023</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SevenPointOneTwoFivePercentageSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Senior Unsecured Notes - 7.125% Due December 15, 2024</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal amount of notes and other debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Less unamortized discount, premium and debt issuance costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:to="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Notes and other debt less unamortized discount and debt issuance costs</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt instrument, maturity date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, imputed interest rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Effective Percentage</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LineOfCreditTerminatedRelatedCommitments" xlink:type="locator" xlink:label="unit_LineOfCreditTerminatedRelatedCommitments" />
    <link:label xml:lang="en-US" xlink:label="unit_LineOfCreditTerminatedRelatedCommitments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit terminated related commitments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LineOfCreditTerminatedRelatedCommitments" xlink:to="unit_LineOfCreditTerminatedRelatedCommitments_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_DebtInstrumentMaturityYear" xlink:type="locator" xlink:label="unit_DebtInstrumentMaturityYear" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument maturity year.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DebtInstrumentMaturityYear" xlink:to="unit_DebtInstrumentMaturityYear_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_SevenPointEightSevenFivePercentageSeniorUnsecuredNotesDueTwoThousandTwentyFiveMember" xlink:type="locator" xlink:label="unit_SevenPointEightSevenFivePercentageSeniorUnsecuredNotesDueTwoThousandTwentyFiveMember" />
    <link:label xml:lang="en-US" xlink:label="unit_SevenPointEightSevenFivePercentageSeniorUnsecuredNotesDueTwoThousandTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">7.875% senior secured notes due 2025 .</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SevenPointEightSevenFivePercentageSeniorUnsecuredNotesDueTwoThousandTwentyFiveMember" xlink:to="unit_SevenPointEightSevenFivePercentageSeniorUnsecuredNotesDueTwoThousandTwentyFiveMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_SevenPointEightSevenFivePercentageSeniorUnsecuredNotesDueTwoThousandTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior Unsecured Notes - 7.875%, 2025</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SevenPointEightSevenFivePercentageSeniorUnsecuredNotesDueTwoThousandTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Seven Point Eight Seven Five Percentage Senior Unsecured Notes Due Two Thousand Twenty Five [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CSLCapitalLLCMember" xlink:type="locator" xlink:label="unit_CSLCapitalLLCMember" />
    <link:label xml:lang="en-US" xlink:label="unit_CSLCapitalLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">CSL Capital LLC.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CSLCapitalLLCMember" xlink:to="unit_CSLCapitalLLCMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CSLCapitalLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CSL Capital, LLC</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CSLCapitalLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">C S L Capital L L C [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_NonExtendedRevolvingCreditFacilityMember" xlink:type="locator" xlink:label="unit_NonExtendedRevolvingCreditFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="unit_NonExtendedRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-extended revolving credit facility.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_NonExtendedRevolvingCreditFacilityMember" xlink:to="unit_NonExtendedRevolvingCreditFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_NonExtendedRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Extended Revolving Credit Facility</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_NonExtendedRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Non Extended Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ExtendedRevolvingCreditFacilityMember" xlink:type="locator" xlink:label="unit_ExtendedRevolvingCreditFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="unit_ExtendedRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Extended Revolving Credit Facility.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ExtendedRevolvingCreditFacilityMember" xlink:to="unit_ExtendedRevolvingCreditFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ExtendedRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Extended Revolving Credit Facility</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ExtendedRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Extended Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis" xlink:type="locator" xlink:label="us-gaap_VariableRateAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableRateAxis" xlink:to="us-gaap_VariableRateAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain" xlink:type="locator" xlink:label="us-gaap_VariableRateDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableRateDomain" xlink:to="us-gaap_VariableRateDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BaseRateMember" xlink:type="locator" xlink:label="us-gaap_BaseRateMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BaseRateMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Base Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BaseRateMember" xlink:to="us-gaap_BaseRateMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BaseRateMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Base Rate [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EurodollarMember" xlink:type="locator" xlink:label="us-gaap_EurodollarMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EurodollarMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Eurodollar</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EurodollarMember" xlink:to="us-gaap_EurodollarMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EurodollarMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Eurodollar [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_SixPointFiveZeroPercentageSeniorNotesDueTwoThousandTwentyNineMember" xlink:type="locator" xlink:label="unit_SixPointFiveZeroPercentageSeniorNotesDueTwoThousandTwentyNineMember" />
    <link:label xml:lang="en-US" xlink:label="unit_SixPointFiveZeroPercentageSeniorNotesDueTwoThousandTwentyNineMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Six Point Five Zero Percentage Senior Notes Due Two Thousand Twenty Nine.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SixPointFiveZeroPercentageSeniorNotesDueTwoThousandTwentyNineMember" xlink:to="unit_SixPointFiveZeroPercentageSeniorNotesDueTwoThousandTwentyNineMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_SixPointFiveZeroPercentageSeniorNotesDueTwoThousandTwentyNineMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">6.50% Senior Notes due 2029</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SixPointFiveZeroPercentageSeniorNotesDueTwoThousandTwentyNineMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Six Point Five Zero Percentage Senior Notes Due Two Thousand Twenty Nine [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lender Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityAxis" xlink:to="us-gaap_LineOfCreditFacilityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility, Lender</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityLenderDomain" xlink:to="us-gaap_LineOfCreditFacilityLenderDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Lender [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_BorrowersMember" xlink:type="locator" xlink:label="unit_BorrowersMember" />
    <link:label xml:lang="en-US" xlink:label="unit_BorrowersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Borrowers.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_BorrowersMember" xlink:to="unit_BorrowersMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_BorrowersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Partnership, CSL Capital, LLC, Uniti Group Finance 2019 Inc. and Uniti Fiber</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_BorrowersMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Borrowers [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, maturity year</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maturity Year</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RepaymentsOfDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repayments of debt</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RepaymentsOfLinesOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repayments of lines of credit</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LineOfCreditTerminatedRelatedCommitments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving loans terminated related commitments</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LineOfCreditTerminatedRelatedCommitments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Terminated Related Commitments</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_SecuredLeverageRatio" xlink:type="locator" xlink:label="unit_SecuredLeverageRatio" />
    <link:label xml:lang="en-US" xlink:label="unit_SecuredLeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Secured leverage ratio.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_SecuredLeverageRatio" xlink:to="unit_SecuredLeverageRatio_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_SecuredLeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated secured leverage ratio</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SecuredLeverageRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Secured Leverage Ratio</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault" xlink:type="locator" xlink:label="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, debt default, description of violation or event of default</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault" xlink:to="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Default Longterm Debt Description Of Violation Or Event Of Default</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtDefaultLongtermDebtAmount" xlink:type="locator" xlink:label="us-gaap_DebtDefaultLongtermDebtAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtDefaultLongtermDebtAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, debt default, amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDefaultLongtermDebtAmount" xlink:to="us-gaap_DebtDefaultLongtermDebtAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtDefaultLongtermDebtAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Default Longterm Debt Amount</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LongTermDebtPayableCurrentPursuantToFifthAmendment" xlink:type="locator" xlink:label="unit_LongTermDebtPayableCurrentPursuantToFifthAmendment" />
    <link:label xml:lang="en-US" xlink:label="unit_LongTermDebtPayableCurrentPursuantToFifthAmendment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Long term debt payable current pursuant to fifth amendment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LongTermDebtPayableCurrentPursuantToFifthAmendment" xlink:to="unit_LongTermDebtPayableCurrentPursuantToFifthAmendment_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_LongTermDebtPayableCurrentPursuantToFifthAmendment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, payable pursuant to fifth amendment</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LongTermDebtPayableCurrentPursuantToFifthAmendment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Payable Current Pursuant To Fifth Amendment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, non extended maturity amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtCurrent" xlink:to="us-gaap_LongTermDebtCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Current</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_LineOfCreditFacilityUnusedCapacityCommitmentFeeDecreasePercentage" xlink:type="locator" xlink:label="unit_LineOfCreditFacilityUnusedCapacityCommitmentFeeDecreasePercentage" />
    <link:label xml:lang="en-US" xlink:label="unit_LineOfCreditFacilityUnusedCapacityCommitmentFeeDecreasePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility unused capacity commitment fee decrease percentage.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_LineOfCreditFacilityUnusedCapacityCommitmentFeeDecreasePercentage" xlink:to="unit_LineOfCreditFacilityUnusedCapacityCommitmentFeeDecreasePercentage_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt instrument, basis spread on variable rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Basis Spread On Variable Rate1</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment fee percentage of average amount of unused commitments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" xlink:to="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Unused Capacity Commitment Fee Percentage</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LineOfCreditFacilityUnusedCapacityCommitmentFeeDecreasePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment fee step-down percentage of average amount of unused commitments</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_LineOfCreditFacilityUnusedCapacityCommitmentFeeDecreasePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Unused Capacity Commitment Fee Decrease Percentage</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DebtInstrumentIssuedPercentOfPar" xlink:type="locator" xlink:label="unit_DebtInstrumentIssuedPercentOfPar" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentIssuedPercentOfPar_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument issued percent of par.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DebtInstrumentIssuedPercentOfPar" xlink:to="unit_DebtInstrumentIssuedPercentOfPar_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of senior notes, principal amount</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentIssuedPercentOfPar_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes issued price percentage at par</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentIssuedPercentOfPar_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Issued Percent Of Par</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DebtInstrumentRemainingOutstandingPrincipalAmount" xlink:type="locator" xlink:label="unit_DebtInstrumentRemainingOutstandingPrincipalAmount" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentRemainingOutstandingPrincipalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument remaining outstanding principal amount.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DebtInstrumentRemainingOutstandingPrincipalAmount" xlink:to="unit_DebtInstrumentRemainingOutstandingPrincipalAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentRemainingOutstandingPrincipalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of senior notes, principal amount</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentRemainingOutstandingPrincipalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Remaining Outstanding Principal Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFrequencyOfPeriodicPayment" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, frequency of periodic payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment" xlink:to="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Frequency Of Periodic Payment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentDateOfFirstRequiredPayment1" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentDateOfFirstRequiredPayment1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentDateOfFirstRequiredPayment1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument,date of first required payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentDateOfFirstRequiredPayment1" xlink:to="us-gaap_DebtInstrumentDateOfFirstRequiredPayment1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentDateOfFirstRequiredPayment1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Date Of First Required Payment1</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DebtInstrumentExchangeRateOfEquityShares" xlink:type="locator" xlink:label="unit_DebtInstrumentExchangeRateOfEquityShares" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentExchangeRateOfEquityShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument exchange rate of equity shares.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DebtInstrumentExchangeRateOfEquityShares" xlink:to="unit_DebtInstrumentExchangeRateOfEquityShares_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentExchangeRateOfEquityShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, indenture exchange rate shares per thousand dollars principal amount</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtInstrumentExchangeRateOfEquityShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Exchange Rate Of Equity Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, indenture exchange price per share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:to="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Convertible Conversion Price1</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, redemption price, percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:to="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Price Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodStartDate" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodStartDate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodStartDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, redemption period, start date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodStartDate" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodStartDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodStartDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period Start Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, redemption threshold percentage of stock price</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger" xlink:to="us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Convertible Threshold Percentage Of Stock Price Trigger</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DebtIssuanceCostsCommissionsPayable" xlink:type="locator" xlink:label="unit_DebtIssuanceCostsCommissionsPayable" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtIssuanceCostsCommissionsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt issuance costs commissions payable.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DebtIssuanceCostsCommissionsPayable" xlink:to="unit_DebtIssuanceCostsCommissionsPayable_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_DebtIssuanceCostsPayableToThirdParty" xlink:type="locator" xlink:label="unit_DebtIssuanceCostsPayableToThirdParty" />
    <link:label xml:lang="en-US" xlink:label="unit_DebtIssuanceCostsPayableToThirdParty_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt issuance costs payable to third party.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DebtIssuanceCostsPayableToThirdParty" xlink:to="unit_DebtIssuanceCostsPayableToThirdParty_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt discount amortized to interest expense effective interest rate</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtIssuanceCostsCommissionsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt issuance costs commissions payable</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtIssuanceCostsCommissionsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs Commissions Payable</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtIssuanceCostsPayableToThirdParty_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt issuance costs payable to third party</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DebtIssuanceCostsPayableToThirdParty_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs Payable To Third Party</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:type="locator" xlink:label="us-gaap_DeferredFinanceCostsNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt issuance cost attributable to equity component</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFinanceCostsNet" xlink:to="us-gaap_DeferredFinanceCostsNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Finance Costs Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity component value of convertible note issuance, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent" xlink:to="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Convertible Carrying Amount Of The Equity Component</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:type="locator" xlink:label="us-gaap_AmortizationOfFinancingCosts" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of deferred financing costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfFinancingCosts" xlink:to="us-gaap_AmortizationOfFinancingCosts_lbl" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Maturities Repayments Of Principal In Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodFairValue" xlink:type="locator" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodFairValue" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Unvested balance</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Unvested balance, Weighted Average Fair Value at Grant Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Granted, Weighted Average Fair Value at Grant Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forfeited, Weighted Average Fair Value at Grant Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vested, Weighted Average Fair Value at Grant Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Unvested balance, Weighted Average Fair Value at Grant Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unvested balance, Aggregate Intrinsic Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Nonvested</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate intrinsic value</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Intrinsic Value</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted-average fair value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total fair value of shares vesting</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized compensation expense</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average vesting period</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTargetShares" xlink:type="locator" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTargetShares" />
    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTargetShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award percentage of target shares.</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTargetShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of target shares</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance period</link:label>
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    <link:loc xlink:href="unit-20201231.xsd#unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodPercentageOfTargetAmount" xlink:type="locator" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodPercentageOfTargetAmount" />
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    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodPercentageOfTargetAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of target amount</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of shares forfeited</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected term (years)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected volatility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Expected annual dividend</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk free rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount" xlink:type="locator" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount" />
    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award maximum employee subscription amount.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount" xlink:to="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_ShareBasedCompensationArrangementByShareBasedPaymentPlanPeriodDescription" xlink:type="locator" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentPlanPeriodDescription" />
    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentPlanPeriodDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment plan period description.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ShareBasedCompensationArrangementByShareBasedPaymentPlanPeriodDescription" xlink:to="unit_ShareBasedCompensationArrangementByShareBasedPaymentPlanPeriodDescription_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentPlanPeriodDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Plan period description</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentPlanPeriodDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Plan Period Description</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum employee subscription rate based on annual earnings, percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum amount withheld by employee to purchase common stock</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase price of common stock, percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Sharebased Compensation Arrangement By Sharebased Payment Award Purchase Price Of Common Stock Percent</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of shares sold to employees</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:type="locator" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compensation expense recognized during the period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Allocated Share Based Compensation Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:to="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_PEGBandwidthLLCMember" xlink:type="locator" xlink:label="unit_PEGBandwidthLLCMember" />
    <link:label xml:lang="en-US" xlink:label="unit_PEGBandwidthLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">PEG Bandwidth LLC.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PEGBandwidthLLCMember" xlink:to="unit_PEGBandwidthLLCMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_PEGBandwidthLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PEG Bandwidth, LLC</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PEGBandwidthLLCMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">P E G Bandwidth L L C [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:type="locator" xlink:label="us-gaap_StatementClassOfStockAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Class Of Stock [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfStockDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_ClassOfStockDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Class Of Stock [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:type="locator" xlink:label="us-gaap_ConvertiblePreferredStockMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConvertiblePreferredStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A Convertible Preferred Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertiblePreferredStockMember" xlink:to="us-gaap_ConvertiblePreferredStockMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ConvertiblePreferredStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Preferred Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:type="locator" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Anti-dilutive securities excluded from the computation of diluted earnings per share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:type="locator" xlink:label="us-gaap_PreferredStockDividendRatePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of dividend rate on convertible preferred stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendRatePercentage" xlink:to="us-gaap_PreferredStockDividendRatePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Dividend Rate Percentage</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_PercentageOfAggregateAmountOfContingentConsiderationPayments" xlink:type="locator" xlink:label="unit_PercentageOfAggregateAmountOfContingentConsiderationPayments" />
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfAggregateAmountOfContingentConsiderationPayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of aggregate amount of contingent consideration payments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PercentageOfAggregateAmountOfContingentConsiderationPayments" xlink:to="unit_PercentageOfAggregateAmountOfContingentConsiderationPayments_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_CashPercentageOfSettlementObligationUponAchievementOfDefinedMilestones" xlink:type="locator" xlink:label="unit_CashPercentageOfSettlementObligationUponAchievementOfDefinedMilestones" />
    <link:label xml:lang="en-US" xlink:label="unit_CashPercentageOfSettlementObligationUponAchievementOfDefinedMilestones_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash percentage of settlement obligation upon achievement of defined milestones.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CashPercentageOfSettlementObligationUponAchievementOfDefinedMilestones" xlink:to="unit_CashPercentageOfSettlementObligationUponAchievementOfDefinedMilestones_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfAggregateAmountOfContingentConsiderationPayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of aggregate amount of contingent consideration payments</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfAggregateAmountOfContingentConsiderationPayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Aggregate Amount Of Contingent Consideration Payments</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CashPercentageOfSettlementObligationUponAchievementOfDefinedMilestones_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of settlement of obligation in cash upon achievement of defined milestones</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CashPercentageOfSettlementObligationUponAchievementOfDefinedMilestones_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Percentage Of Settlement Obligation Upon Achievement Of Defined Milestones</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_MarkToMarketGainLossOnShareSettledContingentConsiderationClassifiedAsEquity" xlink:type="locator" xlink:label="unit_MarkToMarketGainLossOnShareSettledContingentConsiderationClassifiedAsEquity" />
    <link:label xml:lang="en-US" xlink:label="unit_MarkToMarketGainLossOnShareSettledContingentConsiderationClassifiedAsEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Mark to market gain loss on share settled contingent consideration classified as equity.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareBasicAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic earnings per share:</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share Basic [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Numerator:</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Loss Available To Common Stockholders Basic [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net (loss) income attributable to shareholders</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract" xlink:type="locator" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Denominator:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number Of Shares Outstanding Basic [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Basic weighted-average common shares outstanding</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Basic (loss) earnings per common share</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDilutedAbstract" xlink:to="us-gaap_EarningsPerShareDilutedAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share Diluted [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Numerator:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xlink:to="us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Loss Available To Common Stockholders Diluted [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted" xlink:type="locator" xlink:label="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Income allocated to participating securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted" xlink:to="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Participating Securities Distributed And Undistributed Earnings Loss Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:type="locator" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impact on if-converted dilutive securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:to="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Common Shares Attributable To Conversion Of Debt Securities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MarkToMarketGainLossOnShareSettledContingentConsiderationClassifiedAsEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mark-to-market gain on share settled contingent consideration arrangements</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_MarkToMarketGainLossOnShareSettledContingentConsiderationClassifiedAsEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Mark To Market Gain Loss On Share Settled Contingent Consideration Classified As Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net (loss) income attributable to common shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Loss Available To Common Stockholders Diluted</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Denominator:</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesIssuedBasic" xlink:type="locator" xlink:label="us-gaap_WeightedAverageNumberOfSharesIssuedBasic" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesIssuedBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic weighted-average common shares outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesIssuedBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesIssuedBasic_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesIssuedBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number Of Shares Issued Basic</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares" xlink:type="locator" xlink:label="us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contingent consideration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares" xlink:to="us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Common Shares Attributable To Contingently Issuable Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:type="locator" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effect of dilutive non-participating securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:to="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Common Shares Attributable To Share Based Payment Arrangements</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted-average shares for dilutive earnings per common share</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Dilutive (loss) earnings per common share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Segment Reporting Information By Segment [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Segment Reporting Information By Segment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingInformationLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting Information [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_SegmentReportingInformationLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Information [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of operating business segments</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_TowerSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Towers</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateMember" xlink:type="locator" xlink:label="us-gaap_CorporateMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CorporateMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Corporate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CorporateMember" xlink:to="us-gaap_CorporateMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CorporateMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Corporate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Revenues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Revenues</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjusted EBITDA</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjusted Earnings Before Interest Taxes Depreciation And Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense" xlink:type="locator" xlink:label="us-gaap_InterestExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SegmentReportingInformationOtherIncomeExpenseNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Other (income) expense</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_SegmentReportingInformationOtherIncomeExpenseNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Information Other Income Expense Net</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustmentsForEquityInEarningsFromUnconsolidatedEntities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments or equity in earnings from unconsolidated entities</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AdjustmentsForEquityInEarningsFromUnconsolidatedEntities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments For Equity In Earnings From Unconsolidated Entities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:type="locator" xlink:label="us-gaap_OtherNonoperatingIncomeExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Nonoperating Income Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital expenditures</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Property Plant And Equipment</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total assets</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CommitmentsAndContingenciesLineItems" xlink:type="locator" xlink:label="unit_CommitmentsAndContingenciesLineItems" />
    <link:label xml:lang="en-US" xlink:label="unit_CommitmentsAndContingenciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments and contingencies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CommitmentsAndContingenciesLineItems" xlink:to="unit_CommitmentsAndContingenciesLineItems_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_CommitmentsAndContingenciesTable" xlink:type="locator" xlink:label="unit_CommitmentsAndContingenciesTable" />
    <link:label xml:lang="en-US" xlink:label="unit_CommitmentsAndContingenciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments and contingencies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CommitmentsAndContingenciesTable" xlink:to="unit_CommitmentsAndContingenciesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CommitmentsAndContingenciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments And Contingencies [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommitmentsAndContingenciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies [Table]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_WindstreamCreditorsMember" xlink:type="locator" xlink:label="unit_WindstreamCreditorsMember" />
    <link:label xml:lang="en-US" xlink:label="unit_WindstreamCreditorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Windstream creditors.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_WindstreamCreditorsMember" xlink:to="unit_WindstreamCreditorsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_WindstreamCreditorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Windstream Creditors</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_WindstreamCreditorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Windstream Creditors [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommitmentsAndContingenciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments And Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommitmentsAndContingenciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LitigationSettlementExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Settlement of litigation</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_QuarterlyCashPaymentsToBeMadeAfterEmergence" xlink:type="locator" xlink:label="unit_QuarterlyCashPaymentsToBeMadeAfterEmergence" />
    <link:label xml:lang="en-US" xlink:label="unit_QuarterlyCashPaymentsToBeMadeAfterEmergence_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Quarterly cash payments to be made after emergence.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_QuarterlyCashPaymentsToBeMadeAfterEmergence" xlink:to="unit_QuarterlyCashPaymentsToBeMadeAfterEmergence_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_PercentageOfCommittedPurchaseOfAsset" xlink:type="locator" xlink:label="unit_PercentageOfCommittedPurchaseOfAsset" />
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfCommittedPurchaseOfAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of committed purchase of asset.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_PercentageOfCommittedPurchaseOfAsset" xlink:to="unit_PercentageOfCommittedPurchaseOfAsset_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_EffectiveRateOfPaymentsRecognizedAsInterestExpense" xlink:type="locator" xlink:label="unit_EffectiveRateOfPaymentsRecognizedAsInterestExpense" />
    <link:label xml:lang="en-US" xlink:label="unit_EffectiveRateOfPaymentsRecognizedAsInterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Effective rate of payments recognized as interest expense.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_EffectiveRateOfPaymentsRecognizedAsInterestExpense" xlink:to="unit_EffectiveRateOfPaymentsRecognizedAsInterestExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_QuarterlyCashPaymentsToBeMadeAfterEmergence_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Quarterly cash payments to be made after emergence</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_QuarterlyCashPaymentsToBeMadeAfterEmergence_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Quarterly Cash Payments To Be Made After Emergence</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfCommittedPurchaseOfAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of committed purchase of assets</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_PercentageOfCommittedPurchaseOfAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Committed Purchase Of Asset</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial fair value</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EffectiveRateOfPaymentsRecognizedAsInterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective rate of payments recognized as interest expense</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_EffectiveRateOfPaymentsRecognizedAsInterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Effective Rate Of Payments Recognized As Interest Expense</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CommonStockAgreedToSell" xlink:type="locator" xlink:label="unit_CommonStockAgreedToSell" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockAgreedToSell_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock agreed to sell.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CommonStockAgreedToSell" xlink:to="unit_CommonStockAgreedToSell_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockAgreedToSell_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock agreed to sell</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockAgreedToSell_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Agreed To Sell</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharePrice" xlink:type="locator" xlink:label="us-gaap_SharePrice" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Closing price of common stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SharePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Price</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_RightOfUseAssetAndUnderlyingRightsOfFiberStrandMiles" xlink:type="locator" xlink:label="unit_RightOfUseAssetAndUnderlyingRightsOfFiberStrandMiles" />
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAndUnderlyingRightsOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Right of use asset and underlying rights of fiber strand miles.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RightOfUseAssetAndUnderlyingRightsOfFiberStrandMiles" xlink:to="unit_RightOfUseAssetAndUnderlyingRightsOfFiberStrandMiles_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAndUnderlyingRightsOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right of use asset and underlying rights of fiber strand miles</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RightOfUseAssetAndUnderlyingRightsOfFiberStrandMiles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Right Of Use Asset And Underlying Rights Of Fiber Strand Miles</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_ObligationsUnderTaxMattersAgreement" xlink:type="locator" xlink:label="unit_ObligationsUnderTaxMattersAgreement" />
    <link:label xml:lang="en-US" xlink:label="unit_ObligationsUnderTaxMattersAgreement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Obligations under tax matters agreement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_ObligationsUnderTaxMattersAgreement" xlink:to="unit_ObligationsUnderTaxMattersAgreement_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_ObligationsUnderTaxMattersAgreement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Obligations under tax matters agreement</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_ObligationsUnderTaxMattersAgreement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Obligations Under Tax Matters Agreement</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_StockholdersEquityBalanceBeforeAdjustingForNoncontrollingInterest" xlink:type="locator" xlink:label="unit_StockholdersEquityBalanceBeforeAdjustingForNoncontrollingInterest" />
    <link:label xml:lang="en-US" xlink:label="unit_StockholdersEquityBalanceBeforeAdjustingForNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Stockholders equity balance before adjusting for noncontrolling interest.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_StockholdersEquityBalanceBeforeAdjustingForNoncontrollingInterest" xlink:to="unit_StockholdersEquityBalanceBeforeAdjustingForNoncontrollingInterest_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income Loss [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income Loss [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flow Hedge Changes in Fair Value Gain (Loss)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember" xlink:to="us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Gain Loss Cash Flow Hedge Including Noncontrolling Interest [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_AccumulatedInterestRateSwapTerminationIncludingNoncontrollingInterestMember" xlink:type="locator" xlink:label="unit_AccumulatedInterestRateSwapTerminationIncludingNoncontrollingInterestMember" />
    <link:label xml:lang="en-US" xlink:label="unit_AccumulatedInterestRateSwapTerminationIncludingNoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Accumulated interest rate swap termination including noncontrolling interest.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_AccumulatedInterestRateSwapTerminationIncludingNoncontrollingInterestMember" xlink:to="unit_AccumulatedInterestRateSwapTerminationIncludingNoncontrollingInterestMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_AccumulatedInterestRateSwapTerminationIncludingNoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest Rate Swap Termination</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_AccumulatedInterestRateSwapTerminationIncludingNoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Interest Rate Swap Termination Including Noncontrolling Interest [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign Currency Translation Gain (Loss)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember" xlink:to="us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Foreign Currency Adjustment Including Portion Attributable To Noncontrolling Interest [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income Loss [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income Loss [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance at beginning of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other comprehensive income (loss) before reclassifications</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income Loss Before Reclassifications Net Of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassified through other comprehensive income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From A O C I Realized Upon Sale Or Liquidation Net Of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:type="locator" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amounts reclassified from accumulated other comprehensive income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:to="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net other comprehensive income (loss)</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockholdersEquityBalanceBeforeAdjustingForNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance at end of period</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_StockholdersEquityBalanceBeforeAdjustingForNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity Balance Before Adjusting For Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Other comprehensive income (loss) attributable to noncontrolling interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at end of period</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accumulated other comprehensive income (loss) at end of period</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_AnnualDistributionPercentageOfReitTaxableIncome" xlink:type="locator" xlink:label="unit_AnnualDistributionPercentageOfReitTaxableIncome" />
    <link:label xml:lang="en-US" xlink:label="unit_AnnualDistributionPercentageOfReitTaxableIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Annual distribution percentage of reit taxable income.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_AnnualDistributionPercentageOfReitTaxableIncome" xlink:to="unit_AnnualDistributionPercentageOfReitTaxableIncome_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_IncomeTaxesLineItems" xlink:type="locator" xlink:label="unit_IncomeTaxesLineItems" />
    <link:label xml:lang="en-US" xlink:label="unit_IncomeTaxesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income taxes.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_IncomeTaxesLineItems" xlink:to="unit_IncomeTaxesLineItems_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_IncomeTaxesTable" xlink:type="locator" xlink:label="unit_IncomeTaxesTable" />
    <link:label xml:lang="en-US" xlink:label="unit_IncomeTaxesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income taxes.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_IncomeTaxesTable" xlink:to="unit_IncomeTaxesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_IncomeTaxesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_IncomeTaxesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxPeriodAxis" xlink:type="locator" xlink:label="us-gaap_TaxPeriodAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TaxPeriodAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxPeriodAxis" xlink:to="us-gaap_TaxPeriodAxis_lbl" />
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    <link:loc xlink:href="unit-20201231.xsd#unit_AvailableOfCommonStockForIssuance" xlink:type="locator" xlink:label="unit_AvailableOfCommonStockForIssuance" />
    <link:label xml:lang="en-US" xlink:label="unit_AvailableOfCommonStockForIssuance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Available of common stock for issuance.</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Aggregate offering price of common stock</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_AvailableOfCommonStockForIssuance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Available Of Common Stock For Issuance</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock issued during period conversion of convertible securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConversionOfStockSharesConverted1" xlink:type="locator" xlink:label="us-gaap_ConversionOfStockSharesConverted1" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock issued during period, value, conversion of convertible securities</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CommonStockDistributionPerShare" xlink:type="locator" xlink:label="unit_CommonStockDistributionPerShare" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock distribution per share.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CommonStockDistributionPerShare" xlink:to="unit_CommonStockDistributionPerShare_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock distribution per share</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Distribution Per Share</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_CommonStockOrdinaryDividendsDistributionPerShare" xlink:type="locator" xlink:label="unit_CommonStockOrdinaryDividendsDistributionPerShare" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockOrdinaryDividendsDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock ordinary dividends distribution per share.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CommonStockOrdinaryDividendsDistributionPerShare" xlink:to="unit_CommonStockOrdinaryDividendsDistributionPerShare_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_CapitalGainDividendsDistributionPerShare" xlink:type="locator" xlink:label="unit_CapitalGainDividendsDistributionPerShare" />
    <link:label xml:lang="en-US" xlink:label="unit_CapitalGainDividendsDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital gain dividends distribution per share.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CapitalGainDividendsDistributionPerShare" xlink:to="unit_CapitalGainDividendsDistributionPerShare_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_CommonStockNonDividendDistributionsPerShare" xlink:type="locator" xlink:label="unit_CommonStockNonDividendDistributionsPerShare" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockNonDividendDistributionsPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock non dividend distributions per share.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_CommonStockNonDividendDistributionsPerShare" xlink:to="unit_CommonStockNonDividendDistributionsPerShare_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockOrdinaryDividendsDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ordinary dividends</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockOrdinaryDividendsDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Ordinary Dividends Distribution Per Share</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CapitalGainDividendsDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital gain distribution</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CapitalGainDividendsDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Capital Gain Dividends Distribution Per Share</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockNonDividendDistributionsPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-dividend distributions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockNonDividendDistributionsPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Non Dividend Distributions Per Share</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_CommonStockDistributionPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:type="locator" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends payable, date of record</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable Date Of Record Day Month And Year</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend payment, per share</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Dividends Per Share Cash Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsPayableDateToBePaidMonthAndYear" xlink:type="locator" xlink:label="us-gaap_DividendsPayableDateToBePaidMonthAndYear" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsPayableDateToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend payable date</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsPayableDateToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable Date To Be Paid Month And Year</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanNameAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retirement Plan Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanNameAxis" xlink:to="us-gaap_RetirementPlanNameAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Retirement Plan Name [Axis]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retirement Plan Name</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Retirement Plan Name [Domain]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DefinedContributionPlanFirstThreePercentOfEmployeesCompensationMember" xlink:type="locator" xlink:label="unit_DefinedContributionPlanFirstThreePercentOfEmployeesCompensationMember" />
    <link:label xml:lang="en-US" xlink:label="unit_DefinedContributionPlanFirstThreePercentOfEmployeesCompensationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Defined contribution plan first three percent of employees compensation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DefinedContributionPlanFirstThreePercentOfEmployeesCompensationMember" xlink:to="unit_DefinedContributionPlanFirstThreePercentOfEmployeesCompensationMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_DefinedContributionPlanFirstThreePercentOfEmployeesCompensationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Defined Contribution Plan First 3% of Employee&apos;s Compensation</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DefinedContributionPlanFirstThreePercentOfEmployeesCompensationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan First Three Percent Of Employees Compensation [Member]</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_DefinedContributionPlanNextTwoPercentOfEmployeesCompensationMember" xlink:type="locator" xlink:label="unit_DefinedContributionPlanNextTwoPercentOfEmployeesCompensationMember" />
    <link:label xml:lang="en-US" xlink:label="unit_DefinedContributionPlanNextTwoPercentOfEmployeesCompensationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Defined contribution plan next two percent of employees compensation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_DefinedContributionPlanNextTwoPercentOfEmployeesCompensationMember" xlink:to="unit_DefinedContributionPlanNextTwoPercentOfEmployeesCompensationMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_DefinedContributionPlanNextTwoPercentOfEmployeesCompensationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Defined Contribution Plan Next 2% of Employee&apos;s Compensation</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_DefinedContributionPlanNextTwoPercentOfEmployeesCompensationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan Next Two Percent Of Employees Compensation [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedContributionPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanDisclosureLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Defined Contribution Plan Disclosure [Line Items]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan Disclosure [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans" xlink:type="locator" xlink:label="us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Defined contribution plan, description</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Description Of Defined Contribution Pension And Other Postretirement Plans</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of employer matching compensation contributed</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan Employer Matching Contribution Percent Of Match</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of employee&apos;s compensation contributed</link:label>
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    <link:label xml:lang="en-US" xlink:label="unit_TowerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Towers</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationLineItems" xlink:type="locator" xlink:label="srt_RealEstateAndAccumulatedDepreciationLineItems" />
    <link:label xml:lang="en-US" xlink:label="srt_RealEstateAndAccumulatedDepreciationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate And Accumulated Depreciation [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="srt_RealEstateAndAccumulatedDepreciationLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RealEstateAndAccumulatedDepreciationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate And Accumulated Depreciation [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateGrossAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_RealEstateGrossAtCarryingValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Amount Carried at Close of Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateGrossAtCarryingValue" xlink:to="us-gaap_RealEstateGrossAtCarryingValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Gross At Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciation" xlink:type="locator" xlink:label="us-gaap_RealEstateAccumulatedDepreciation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Depreciation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAccumulatedDepreciation" xlink:to="us-gaap_RealEstateAccumulatedDepreciation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Accumulated Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:type="locator" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciable Lives</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate And Accumulated Depreciation Life Used For Depreciation1</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_GrowthCapitalImprovements" xlink:type="locator" xlink:label="unit_GrowthCapitalImprovements" />
    <link:label xml:lang="en-US" xlink:label="unit_GrowthCapitalImprovements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Growth capital improvements.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_GrowthCapitalImprovements" xlink:to="unit_GrowthCapitalImprovements_lbl" />
    <link:label xml:lang="en-US" xlink:label="unit_GrowthCapitalImprovements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Growth capital improvements</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_GrowthCapitalImprovements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Growth Capital Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateFederalIncomeTaxBasis" xlink:type="locator" xlink:label="srt_RealEstateFederalIncomeTaxBasis" />
    <link:label xml:lang="en-US" xlink:label="srt_RealEstateFederalIncomeTaxBasis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate cost of real estate federal income tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateFederalIncomeTaxBasis" xlink:to="srt_RealEstateFederalIncomeTaxBasis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RealEstateFederalIncomeTaxBasis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Federal Income Tax Basis</link:label>
    <link:loc xlink:href="unit-20201231.xsd#unit_RealEstateAdditions" xlink:type="locator" xlink:label="unit_RealEstateAdditions" />
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate additions.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RealEstateAdditions" xlink:to="unit_RealEstateAdditions_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RealEstateDeductions" xlink:type="locator" xlink:label="unit_RealEstateDeductions" />
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate deductions.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RealEstateDeductions" xlink:to="unit_RealEstateDeductions_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RealEstateAccumulatedDepreciationDeductions" xlink:type="locator" xlink:label="unit_RealEstateAccumulatedDepreciationDeductions" />
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAccumulatedDepreciationDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate accumulated depreciation deductions.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RealEstateAccumulatedDepreciationDeductions" xlink:to="unit_RealEstateAccumulatedDepreciationDeductions_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RealEstateAccumulatedDepreciationAdditions" xlink:type="locator" xlink:label="unit_RealEstateAccumulatedDepreciationAdditions" />
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAccumulatedDepreciationAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate accumulated depreciation additions.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RealEstateAccumulatedDepreciationAdditions" xlink:to="unit_RealEstateAccumulatedDepreciationAdditions_lbl" />
    <link:loc xlink:href="unit-20201231.xsd#unit_RealEstateAccumulatedDepreciationOtherAdditionsDeductions" xlink:type="locator" xlink:label="unit_RealEstateAccumulatedDepreciationOtherAdditionsDeductions" />
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAccumulatedDepreciationOtherAdditionsDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate accumulated depreciation other additions (deductions).</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="unit_RealEstateAccumulatedDepreciationOtherAdditionsDeductions" xlink:to="unit_RealEstateAccumulatedDepreciationOtherAdditionsDeductions_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying cost:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward" xlink:to="us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Reconciliation Of Carrying Amount Of Real Estate Investments Roll Forward</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Gross amount at beginning</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateOtherAcquisitions" xlink:type="locator" xlink:label="us-gaap_RealEstateOtherAcquisitions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateOtherAcquisitions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisitions</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateOtherAcquisitions" xlink:to="us-gaap_RealEstateOtherAcquisitions_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateOtherAcquisitions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Other Acquisitions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateOtherAdditions" xlink:type="locator" xlink:label="us-gaap_RealEstateOtherAdditions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateOtherAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateOtherAdditions" xlink:to="us-gaap_RealEstateOtherAdditions_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateOtherAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Other Additions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total additions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Additions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateCostOfRealEstateSold" xlink:type="locator" xlink:label="us-gaap_RealEstateCostOfRealEstateSold" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateCostOfRealEstateSold_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost of real estate sold or disposed</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateCostOfRealEstateSold" xlink:to="us-gaap_RealEstateCostOfRealEstateSold_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateCostOfRealEstateSold_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Cost Of Real Estate Sold</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateOtherDeductions" xlink:type="locator" xlink:label="us-gaap_RealEstateOtherDeductions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateOtherDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateOtherDeductions" xlink:to="us-gaap_RealEstateOtherDeductions_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateOtherDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Other Deductions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total deductions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Deductions</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at end</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated depreciation:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward" xlink:to="us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Reconciliation Of Real Estate Accumulated Depreciation Roll Forward</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Gross amount of accumulated depreciation at beginning</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" xlink:type="locator" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" xlink:to="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">S E C Schedule I I I Real Estate Accumulated Depreciation Depreciation Expense</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAccumulatedDepreciationOtherAdditionsDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAccumulatedDepreciationOtherAdditionsDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Accumulated Depreciation Other Additions Deductions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAccumulatedDepreciationAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total additions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAccumulatedDepreciationAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Accumulated Depreciation Additions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" xlink:type="locator" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amount of accumulated depreciation for assets sold or disposed</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAccumulatedDepreciationOtherDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAccumulatedDepreciationOtherDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Accumulated Depreciation Other Deductions</link:label>
    <link:label xml:lang="en-US" xlink:label="unit_RealEstateAccumulatedDepreciationDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total deductions</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at end</link:label>
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