<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019eb223-e318-7da1-a967-b1bca03984c3,g:e543a7d0-3033-424d-848b-5986ce220120-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:ua="http://www.underarmour.com/20260630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.underarmour.com/20260630">
  <xs:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ua-20260630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ua-20260630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ua-20260630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ua-20260630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="COVER" roleURI="http://www.underarmour.com/role/COVER">
        <link:definition>0000001 - Document - COVER</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDBALANCESHEETS" roleURI="http://www.underarmour.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS">
        <link:definition>9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://www.underarmour.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" roleURI="http://www.underarmour.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS">
        <link:definition>9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSS" roleURI="http://www.underarmour.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSS">
        <link:definition>9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSSParenthetical" roleURI="http://www.underarmour.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSSParenthetical">
        <link:definition>9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" roleURI="http://www.underarmour.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
        <link:definition>9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://www.underarmour.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>9952157 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DESCRIPTIONOFBUSINESSANDBASISOFPRESENTATION" roleURI="http://www.underarmour.com/role/DESCRIPTIONOFBUSINESSANDBASISOFPRESENTATION">
        <link:definition>9952158 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RECENTACCOUNTINGPRONOUNCEMENTS" roleURI="http://www.underarmour.com/role/RECENTACCOUNTINGPRONOUNCEMENTS">
        <link:definition>9952159 - Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROPERTYANDEQUIPMENT" roleURI="http://www.underarmour.com/role/PROPERTYANDEQUIPMENT">
        <link:definition>9952160 - Disclosure - PROPERTY AND EQUIPMENT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASES" roleURI="http://www.underarmour.com/role/LEASES">
        <link:definition>9952161 - Disclosure - LEASES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GOODWILL" roleURI="http://www.underarmour.com/role/GOODWILL">
        <link:definition>9952162 - Disclosure - GOODWILL</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SUPPLYCHAINFINANCEPROGRAM" roleURI="http://www.underarmour.com/role/SUPPLYCHAINFINANCEPROGRAM">
        <link:definition>9952163 - Disclosure - SUPPLY CHAIN FINANCE PROGRAM</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CREDITFACILITYANDOTHERLONGTERMDEBT" roleURI="http://www.underarmour.com/role/CREDITFACILITYANDOTHERLONGTERMDEBT">
        <link:definition>9952164 - Disclosure - CREDIT FACILITY AND OTHER LONG-TERM DEBT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="COMMITMENTSANDCONTINGENCIES" roleURI="http://www.underarmour.com/role/COMMITMENTSANDCONTINGENCIES">
        <link:definition>9952165 - Disclosure - COMMITMENTS AND CONTINGENCIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKHOLDERSEQUITY" roleURI="http://www.underarmour.com/role/STOCKHOLDERSEQUITY">
        <link:definition>9952166 - Disclosure - STOCKHOLDERS' EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUES" roleURI="http://www.underarmour.com/role/REVENUES">
        <link:definition>9952167 - Disclosure - REVENUES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDRELATEDCHARGES" roleURI="http://www.underarmour.com/role/RESTRUCTURINGANDRELATEDCHARGES">
        <link:definition>9952168 - Disclosure - RESTRUCTURING AND RELATED CHARGES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATION" roleURI="http://www.underarmour.com/role/STOCKBASEDCOMPENSATION">
        <link:definition>9952169 - Disclosure - STOCK-BASED COMPENSATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTS" roleURI="http://www.underarmour.com/role/FAIRVALUEMEASUREMENTS">
        <link:definition>9952170 - Disclosure - FAIR VALUE MEASUREMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVES" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVES">
        <link:definition>9952171 - Disclosure - RISK MANAGEMENT AND DERIVATIVES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROVISIONFORINCOMETAXES" roleURI="http://www.underarmour.com/role/PROVISIONFORINCOMETAXES">
        <link:definition>9952172 - Disclosure - PROVISION FOR INCOME TAXES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EARNINGSPERSHARE" roleURI="http://www.underarmour.com/role/EARNINGSPERSHARE">
        <link:definition>9952173 - Disclosure - EARNINGS PER SHARE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTDATA" roleURI="http://www.underarmour.com/role/SEGMENTDATA">
        <link:definition>9952174 - Disclosure - SEGMENT DATA</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RECENTACCOUNTINGPRONOUNCEMENTSPolicies" roleURI="http://www.underarmour.com/role/RECENTACCOUNTINGPRONOUNCEMENTSPolicies">
        <link:definition>9955511 - Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROPERTYANDEQUIPMENTTables" roleURI="http://www.underarmour.com/role/PROPERTYANDEQUIPMENTTables">
        <link:definition>9955512 - Disclosure - PROPERTY AND EQUIPMENT (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESTables" roleURI="http://www.underarmour.com/role/LEASESTables">
        <link:definition>9955513 - Disclosure - LEASES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GOODWILLTables" roleURI="http://www.underarmour.com/role/GOODWILLTables">
        <link:definition>9955514 - Disclosure - GOODWILL (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CREDITFACILITYANDOTHERLONGTERMDEBTTables" roleURI="http://www.underarmour.com/role/CREDITFACILITYANDOTHERLONGTERMDEBTTables">
        <link:definition>9955515 - Disclosure - CREDIT FACILITY AND OTHER LONG-TERM DEBT (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESTables" roleURI="http://www.underarmour.com/role/REVENUESTables">
        <link:definition>9955516 - Disclosure - REVENUES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDRELATEDCHARGESTables" roleURI="http://www.underarmour.com/role/RESTRUCTURINGANDRELATEDCHARGESTables">
        <link:definition>9955517 - Disclosure - RESTRUCTURING AND RELATED CHARGES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONTables" roleURI="http://www.underarmour.com/role/STOCKBASEDCOMPENSATIONTables">
        <link:definition>9955518 - Disclosure - STOCK-BASED COMPENSATION (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSTables" roleURI="http://www.underarmour.com/role/FAIRVALUEMEASUREMENTSTables">
        <link:definition>9955519 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESTables" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESTables">
        <link:definition>9955520 - Disclosure - RISK MANAGEMENT AND DERIVATIVES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EARNINGSPERSHARETables" roleURI="http://www.underarmour.com/role/EARNINGSPERSHARETables">
        <link:definition>9955521 - Disclosure - EARNINGS PER SHARE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTDATATables" roleURI="http://www.underarmour.com/role/SEGMENTDATATables">
        <link:definition>9955522 - Disclosure - SEGMENT DATA (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandBasisofPresentationDetails" roleURI="http://www.underarmour.com/role/DescriptionofBusinessandBasisofPresentationDetails">
        <link:definition>9955523 - Disclosure - Description of Business and Basis of Presentation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROPERTYANDEQUIPMENTScheduleofPropertyPlantandEquipmentDetails" roleURI="http://www.underarmour.com/role/PROPERTYANDEQUIPMENTScheduleofPropertyPlantandEquipmentDetails">
        <link:definition>9955524 - Disclosure - PROPERTY AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROPERTYANDEQUIPMENTNarrativeDetails" roleURI="http://www.underarmour.com/role/PROPERTYANDEQUIPMENTNarrativeDetails">
        <link:definition>9955525 - Disclosure - PROPERTY AND EQUIPMENT - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESScheduleofLeasesCostsDetails" roleURI="http://www.underarmour.com/role/LEASESScheduleofLeasesCostsDetails">
        <link:definition>9955526 - Disclosure - LEASES - Schedule of Leases Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESNarrativeDetails" roleURI="http://www.underarmour.com/role/LEASESNarrativeDetails">
        <link:definition>9955527 - Disclosure - LEASES - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESScheduleofMaturitiesofLeaseLiabilitiesDetails" roleURI="http://www.underarmour.com/role/LEASESScheduleofMaturitiesofLeaseLiabilitiesDetails">
        <link:definition>9955528 - Disclosure - LEASES - Schedule of Maturities of Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESScheduleofMaturitiesofLeaseLiabilitiesDetails_1" roleURI="http://www.underarmour.com/role/LEASESScheduleofMaturitiesofLeaseLiabilitiesDetails_1">
        <link:definition>9955528 - Disclosure - LEASES - Schedule of Maturities of Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GOODWILLDetails" roleURI="http://www.underarmour.com/role/GOODWILLDetails">
        <link:definition>9955529 - Disclosure - GOODWILL (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SUPPLYCHAINFINANCEPROGRAMDetails" roleURI="http://www.underarmour.com/role/SUPPLYCHAINFINANCEPROGRAMDetails">
        <link:definition>9955530 - Disclosure - SUPPLY CHAIN FINANCE PROGRAM (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CREDITFACILITYANDOTHERLONGTERMDEBTScheduleofComponentsofOutstandingDebtDetails" roleURI="http://www.underarmour.com/role/CREDITFACILITYANDOTHERLONGTERMDEBTScheduleofComponentsofOutstandingDebtDetails">
        <link:definition>9955531 - Disclosure - CREDIT FACILITY AND OTHER LONG-TERM DEBT - Schedule of Components of Outstanding Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CREDITFACILITYANDOTHERLONGTERMDEBTScheduleofComponentsofOutstandingDebtDetails_1" roleURI="http://www.underarmour.com/role/CREDITFACILITYANDOTHERLONGTERMDEBTScheduleofComponentsofOutstandingDebtDetails_1">
        <link:definition>9955531 - Disclosure - CREDIT FACILITY AND OTHER LONG-TERM DEBT - Schedule of Components of Outstanding Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CREDITFACILITYANDOTHERLONGTERMDEBTCreditFacilityDetails" roleURI="http://www.underarmour.com/role/CREDITFACILITYANDOTHERLONGTERMDEBTCreditFacilityDetails">
        <link:definition>9955532 - Disclosure - CREDIT FACILITY AND OTHER LONG-TERM DEBT - Credit Facility (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CREDITFACILITYANDOTHERLONGTERMDEBTSeniorNotesCappedCallTransactionandInterestExpenseDetails" roleURI="http://www.underarmour.com/role/CREDITFACILITYANDOTHERLONGTERMDEBTSeniorNotesCappedCallTransactionandInterestExpenseDetails">
        <link:definition>9955533 - Disclosure - CREDIT FACILITY AND OTHER LONG-TERM DEBT - Senior Notes, Capped Call Transaction and Interest Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CREDITFACILITYANDOTHERLONGTERMDEBTInterestExpenseRelatedtoConvertibleSeniorNotesDetails" roleURI="http://www.underarmour.com/role/CREDITFACILITYANDOTHERLONGTERMDEBTInterestExpenseRelatedtoConvertibleSeniorNotesDetails">
        <link:definition>9955534 - Disclosure - CREDIT FACILITY AND OTHER LONG-TERM DEBT - Interest Expense Related to Convertible Senior Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CREDITFACILITYANDOTHERLONGTERMDEBTScheduledMaturitiesOfLongTermDebtDetails" roleURI="http://www.underarmour.com/role/CREDITFACILITYANDOTHERLONGTERMDEBTScheduledMaturitiesOfLongTermDebtDetails">
        <link:definition>9955535 - Disclosure - CREDIT FACILITY AND OTHER LONG-TERM DEBT - Scheduled Maturities Of Long Term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="COMMITMENTSANDCONTINGENCIESNarrativeDetails" roleURI="http://www.underarmour.com/role/COMMITMENTSANDCONTINGENCIESNarrativeDetails">
        <link:definition>9955536 - Disclosure - COMMITMENTS AND CONTINGENCIES - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKHOLDERSEQUITYDetails" roleURI="http://www.underarmour.com/role/STOCKHOLDERSEQUITYDetails">
        <link:definition>9955537 - Disclosure - STOCKHOLDERS' EQUITY (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESScheduleofNetRevenuesByProductCategoryandDistributionChannelsDetails" roleURI="http://www.underarmour.com/role/REVENUESScheduleofNetRevenuesByProductCategoryandDistributionChannelsDetails">
        <link:definition>9955538 - Disclosure - REVENUES - Schedule of Net Revenues By Product Category and Distribution Channels (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESScheduleofCustomerRefundLiabilityandInventoryAssociatedwiththeReservesDetails" roleURI="http://www.underarmour.com/role/REVENUESScheduleofCustomerRefundLiabilityandInventoryAssociatedwiththeReservesDetails">
        <link:definition>9955539 - Disclosure - REVENUES - Schedule of Customer Refund Liability and Inventory Associated with the Reserves (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESScheduleofCustomerRefundLiabilityandInventoryAssociatedwiththeReservesDetails_1" roleURI="http://www.underarmour.com/role/REVENUESScheduleofCustomerRefundLiabilityandInventoryAssociatedwiththeReservesDetails_1">
        <link:definition>9955539 - Disclosure - REVENUES - Schedule of Customer Refund Liability and Inventory Associated with the Reserves (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESScheduleofChangeinContractLiabilitiesDetails" roleURI="http://www.underarmour.com/role/REVENUESScheduleofChangeinContractLiabilitiesDetails">
        <link:definition>9955540 - Disclosure - REVENUES - Schedule of Change in Contract Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDRELATEDCHARGESNarrativeDetails" roleURI="http://www.underarmour.com/role/RESTRUCTURINGANDRELATEDCHARGESNarrativeDetails">
        <link:definition>9955541 - Disclosure - RESTRUCTURING AND RELATED CHARGES - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDRELATEDCHARGESScheduleofRestructuringandRelatedCostsDetails" roleURI="http://www.underarmour.com/role/RESTRUCTURINGANDRELATEDCHARGESScheduleofRestructuringandRelatedCostsDetails">
        <link:definition>9955542 - Disclosure - RESTRUCTURING AND RELATED CHARGES - Schedule of Restructuring and Related Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDRELATEDCHARGESScheduleofRestructuringandRelatedCostsDetails_1" roleURI="http://www.underarmour.com/role/RESTRUCTURINGANDRELATEDCHARGESScheduleofRestructuringandRelatedCostsDetails_1">
        <link:definition>9955542 - Disclosure - RESTRUCTURING AND RELATED CHARGES - Schedule of Restructuring and Related Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDRELATEDCHARGESScheduleofActivityintheRestructuringReserveDetails" roleURI="http://www.underarmour.com/role/RESTRUCTURINGANDRELATEDCHARGESScheduleofActivityintheRestructuringReserveDetails">
        <link:definition>9955543 - Disclosure - RESTRUCTURING AND RELATED CHARGES - Schedule of Activity in the Restructuring Reserve (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONNarrativeDetails" roleURI="http://www.underarmour.com/role/STOCKBASEDCOMPENSATIONNarrativeDetails">
        <link:definition>9955544 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONScheduleofStockOptionsActivityDetails" roleURI="http://www.underarmour.com/role/STOCKBASEDCOMPENSATIONScheduleofStockOptionsActivityDetails">
        <link:definition>9955545 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Stock Options Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONScheduleofSharebasedPaymentAwardStockOptionsValuationAssumptionsDetails" roleURI="http://www.underarmour.com/role/STOCKBASEDCOMPENSATIONScheduleofSharebasedPaymentAwardStockOptionsValuationAssumptionsDetails">
        <link:definition>9955546 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONScheduleofRestrictedStockandRestrictedStockUnitsDetails" roleURI="http://www.underarmour.com/role/STOCKBASEDCOMPENSATIONScheduleofRestrictedStockandRestrictedStockUnitsDetails">
        <link:definition>9955547 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Restricted Stock and Restricted Stock Units (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSScheduleofFinancialAssetsAndLiabilitiesMeasuredAtFairValueDetails" roleURI="http://www.underarmour.com/role/FAIRVALUEMEASUREMENTSScheduleofFinancialAssetsAndLiabilitiesMeasuredAtFairValueDetails">
        <link:definition>9955548 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Financial Assets And (Liabilities) Measured At Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSNarrativeDetails" roleURI="http://www.underarmour.com/role/FAIRVALUEMEASUREMENTSNarrativeDetails">
        <link:definition>9955549 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESScheduleofDerivativesBalanceSheetLocationDetails" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESScheduleofDerivativesBalanceSheetLocationDetails">
        <link:definition>9955550 - Disclosure - RISK MANAGEMENT AND DERIVATIVES - Schedule of Derivatives Balance Sheet Location (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESScheduleofDerivativesBalanceSheetLocationDetails_1" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESScheduleofDerivativesBalanceSheetLocationDetails_1">
        <link:definition>9955550 - Disclosure - RISK MANAGEMENT AND DERIVATIVES - Schedule of Derivatives Balance Sheet Location (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESScheduleofEffectsofCashFlowHedgesDetails" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESScheduleofEffectsofCashFlowHedgesDetails">
        <link:definition>9955551 - Disclosure - RISK MANAGEMENT AND DERIVATIVES - Schedule of Effects of Cash Flow Hedges (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESScheduleofEffectsofCashFlowHedgesDetails_1" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESScheduleofEffectsofCashFlowHedgesDetails_1">
        <link:definition>9955551 - Disclosure - RISK MANAGEMENT AND DERIVATIVES - Schedule of Effects of Cash Flow Hedges (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESDerivativeOtherComprehensiveIncomeRollforwardDetails" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESDerivativeOtherComprehensiveIncomeRollforwardDetails">
        <link:definition>9955552 - Disclosure - RISK MANAGEMENT AND DERIVATIVES - Derivative Other Comprehensive Income Rollforward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESEffectsofUndesignatedDerivativesandFairValueHedgeActivitiesDetails" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESEffectsofUndesignatedDerivativesandFairValueHedgeActivitiesDetails">
        <link:definition>9955553 - Disclosure - RISK MANAGEMENT AND DERIVATIVES - Effects of Undesignated Derivatives and Fair Value Hedge Activities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESEffectsofUndesignatedDerivativesandFairValueHedgeActivitiesDetails_1" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESEffectsofUndesignatedDerivativesandFairValueHedgeActivitiesDetails_1">
        <link:definition>9955553 - Disclosure - RISK MANAGEMENT AND DERIVATIVES - Effects of Undesignated Derivatives and Fair Value Hedge Activities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RISKMANAGEMENTANDDERIVATIVESNarrativeDetails" roleURI="http://www.underarmour.com/role/RISKMANAGEMENTANDDERIVATIVESNarrativeDetails">
        <link:definition>9955554 - Disclosure - RISK MANAGEMENT AND DERIVATIVES - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROVISIONFORINCOMETAXESDetails" roleURI="http://www.underarmour.com/role/PROVISIONFORINCOMETAXESDetails">
        <link:definition>9955555 - Disclosure - PROVISION FOR INCOME TAXES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EARNINGSPERSHAREDetails" roleURI="http://www.underarmour.com/role/EARNINGSPERSHAREDetails">
        <link:definition>9955556 - Disclosure - EARNINGS PER SHARE (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTDATANarrativeDetails" roleURI="http://www.underarmour.com/role/SEGMENTDATANarrativeDetails">
        <link:definition>9955557 - Disclosure - SEGMENT DATA - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTDATAScheduleoftheCompanysNetRevenuesAndOperatingIncomelossByItsGeographicSegmentsDetails" roleURI="http://www.underarmour.com/role/SEGMENTDATAScheduleoftheCompanysNetRevenuesAndOperatingIncomelossByItsGeographicSegmentsDetails">
        <link:definition>9955558 - Disclosure - SEGMENT DATA - Schedule of the Company's Net Revenues And Operating Income (loss) By Its Geographic Segments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="ua_WeightedAverageCommonSharesOutstandingAbstract" abstract="true" name="WeightedAverageCommonSharesOutstandingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ua_OtherComprehensiveIncomeLossForeignCurrencyIntraEntityTransactionAndTranslationAdjustmentNetOfTax" abstract="false" name="OtherComprehensiveIncomeLossForeignCurrencyIntraEntityTransactionAndTranslationAdjustmentNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_ChangesInReservesAndAllowances" abstract="false" name="ChangesInReservesAndAllowances" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" abstract="false" name="IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_IncreaseDecreaseInCustomerRefundLiability" abstract="false" name="IncreaseDecreaseInCustomerRefundLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_PaymentForSettlementOfSatisfiedAndDischargedDebt" abstract="false" name="PaymentForSettlementOfSatisfiedAndDischargedDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_NoncashOrPartNoncashAcquisitionIncreaseDecreaseInAccrualForFixedAssetsAcquired" abstract="false" name="NoncashOrPartNoncashAcquisitionIncreaseDecreaseInAccrualForFixedAssetsAcquired" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_ScheduleOfCustomerRefundLiabilityAndInventoryAssociatedWithTheReservesTableTextBlock" abstract="false" name="ScheduleOfCustomerRefundLiabilityAndInventoryAssociatedWithTheReservesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ua_LeaseholdsAndTenantImprovementsMember" abstract="true" name="LeaseholdsAndTenantImprovementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_PropertyPlantAndEquipmentAccumulatedDepreciationDisposition" abstract="false" name="PropertyPlantAndEquipmentAccumulatedDepreciationDisposition" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_A3.25SeniorNotesMember" abstract="true" name="A3.25SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_A7.25SeniorNotesMember" abstract="true" name="A7.25SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_LongTermDebtCurrentMaturitiesGross" abstract="false" name="LongTermDebtCurrentMaturitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_CreditAgreementMember" abstract="true" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_DebtCovenantConditionAxis" abstract="true" name="DebtCovenantConditionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="ua_DebtCovenantConditionDomain" abstract="true" name="DebtCovenantConditionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_StandardLeverageCovenantMember" abstract="true" name="StandardLeverageCovenantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_PermittedAcquisitionElectionLeverageCovenantMember" abstract="true" name="PermittedAcquisitionElectionLeverageCovenantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_LineOfCreditFacilitySpringingMaturityPeriod" abstract="false" name="LineOfCreditFacilitySpringingMaturityPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ua_LineOfCreditFacilityAccordionFeatureIncreaseLimit" abstract="false" name="LineOfCreditFacilityAccordionFeatureIncreaseLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_DebtCovenantConsolidatedEBITDAPercentage" abstract="false" name="DebtCovenantConsolidatedEBITDAPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ua_DebtInstrumentCovenantSecuredLeverageRatio" abstract="false" name="DebtInstrumentCovenantSecuredLeverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ua_DebtCovenantInterestCoverage" abstract="false" name="DebtCovenantInterestCoverage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ua_DebtCovenantLeverage" abstract="false" name="DebtCovenantLeverage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ua_DebtCovenantLeverageWithPermittedAcquisition" abstract="false" name="DebtCovenantLeverageWithPermittedAcquisition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ua_LongTermDebtMaturityAfterYearFour" abstract="false" name="LongTermDebtMaturityAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_IEEPATariffRefundMember" abstract="true" name="IEEPATariffRefundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_LossContingencyPrejudgmentInterest" abstract="false" name="LossContingencyPrejudgmentInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_TariffsRefundReceived" abstract="false" name="TariffsRefundReceived" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_ClassACommonStockAndClassBConvertibleCommonStockMember" abstract="true" name="ClassACommonStockAndClassBConvertibleCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_ClassCCommonStockRepurchaseProgramMember" abstract="true" name="ClassCCommonStockRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_NumberOfVotes" abstract="false" name="NumberOfVotes" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ua_CommonStockSharesOutstandingOwnershipPercentage" abstract="false" name="CommonStockSharesOutstandingOwnershipPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ua_ApparelMember" abstract="true" name="ApparelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_FootwearMember" abstract="true" name="FootwearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_AccessoriesMember" abstract="true" name="AccessoriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_ReservesForCustomerReturnsAllowancesMarkdownsAndDiscounts" abstract="false" name="ReservesForCustomerReturnsAllowancesMarkdownsAndDiscounts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_RevenueFromContractWithCustomerRollForward" abstract="true" name="RevenueFromContractWithCustomerRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ua_ContractWithCustomerLiabilityRevenuesDeferred" abstract="false" name="ContractWithCustomerLiabilityRevenuesDeferred" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_ContractWithCustomerLiabilityRevenueRecognizedFromRevenueDeferred" abstract="false" name="ContractWithCustomerLiabilityRevenueRecognizedFromRevenueDeferred" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_ContractWithCustomerLiabilityForeignExchangeAndOther" abstract="false" name="ContractWithCustomerLiabilityForeignExchangeAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_A2025RestructuringPlanMember" abstract="true" name="A2025RestructuringPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_CashRelatedChargesMember" abstract="true" name="CashRelatedChargesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_OtherTransformationInitiativesMember" abstract="true" name="OtherTransformationInitiativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_NonCashChargesMember" abstract="true" name="NonCashChargesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_EmployeeSeveranceNoncashMember" abstract="true" name="EmployeeSeveranceNoncashMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_IntangibleAndOtherAssetImpairmentMember" abstract="true" name="IntangibleAndOtherAssetImpairmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_RestructuringAndRelatedCostAdditionalExpectedCost" abstract="false" name="RestructuringAndRelatedCostAdditionalExpectedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_InventoryRelatedCostsMember" abstract="true" name="InventoryRelatedCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_EmployeeFacilityAndOtherCostsMember" abstract="true" name="EmployeeFacilityAndOtherCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_SellingGeneralAndAdministrativeExpensesRestructuringMember" abstract="true" name="SellingGeneralAndAdministrativeExpensesRestructuringMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_RestructuringChargesForeignExchangeAndOther" abstract="false" name="RestructuringChargesForeignExchangeAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_OtherNoncashExpenseRecovery" abstract="false" name="OtherNoncashExpenseRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_TwoThousandFivePlanMember" abstract="true" name="TwoThousandFivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_DirectorCompensationPlanMember" abstract="true" name="DirectorCompensationPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_EmployeesAndNonEmployeeDirectorsMember" abstract="true" name="EmployeesAndNonEmployeeDirectorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_MarketingAndConsultingPartnersMember" abstract="true" name="MarketingAndConsultingPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_PresidentAndCEOMember" abstract="true" name="PresidentAndCEOMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_DeferredStockUnitsMember" abstract="true" name="DeferredStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_PerformanceBasedRestrictedStockUnitsMember" abstract="true" name="PerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ua_NonEmployeeDirectorsFairValueOfStockAwards" abstract="false" name="NonEmployeeDirectorsFairValueOfStockAwards" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEqualAnnualVestingInstallments" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEqualAnnualVestingInstallments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ua_NonEmployeeDirectorsStockAwardsPercentageVestedOnDateOfTheNextAnnualStockholdersMeetingFollowingGrantDate" abstract="false" name="NonEmployeeDirectorsStockAwardsPercentageVestedOnDateOfTheNextAnnualStockholdersMeetingFollowingGrantDate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ua_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockObligationNumberOfShares" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockObligationNumberOfShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ua_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockObligationSharesDeliveryPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockObligationSharesDeliveryPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ua_EmployeeStockPurchaseProgramDiscountRateFromFairMarketValue" abstract="false" name="EmployeeStockPurchaseProgramDiscountRateFromFairMarketValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ua_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ua_RestrictedStockAndRestrictedStockUnitsMember" abstract="true" name="RestrictedStockAndRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_DeferredCompensationPlanObligationsFairValueDisclosure" abstract="false" name="DeferredCompensationPlanObligationsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_TrustOwnedLifeInsurancePoliciesFairValueDisclosure" abstract="false" name="TrustOwnedLifeInsurancePoliciesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_RestrictedInvestmentsCaptiveInsuranceProgramFairValueDisclosure" abstract="false" name="RestrictedInvestmentsCaptiveInsuranceProgramFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ua_DerivativeAssetLiabilityRollforwardRollForward" abstract="true" name="DerivativeAssetLiabilityRollforwardRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ua_MinimumRemainingMaturityofForeignCurrencyDerivatives" abstract="false" name="MinimumRemainingMaturityofForeignCurrencyDerivatives" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ua_StockOptionsAndRSUsRepresentingClassAAndClassCCommonStockMember" abstract="true" name="StockOptionsAndRSUsRepresentingClassAAndClassCCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ua_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareDueToLossInPeriodAmount" abstract="false" name="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareDueToLossInPeriodAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ua_NumberOfIndustriesPerSegment" abstract="false" name="NumberOfIndustriesPerSegment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
</xs:schema>
