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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e46bf-2fd5-795c-b0e9-a0cf02f1d7ee,g:c4355699-796f-4a58-8fbe-4b0e903693b6-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:rmr="http://www.reitmr.com/20260630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.reitmr.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.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="rmr-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="rmr-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="rmr-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="rmr-20260630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="CoverPage" roleURI="http://www.reitmr.com/role/CoverPage">
        <link:definition>0000001 - Document - Cover Page</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.reitmr.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.reitmr.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="CondensedConsolidatedStatementsofComprehensiveIncome" roleURI="http://www.reitmr.com/role/CondensedConsolidatedStatementsofComprehensiveIncome">
        <link:definition>9952153 - Statement - Condensed Consolidated Statements of Comprehensive Income</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="CondensedConsolidatedStatementsofComprehensiveIncomeParenthetical" roleURI="http://www.reitmr.com/role/CondensedConsolidatedStatementsofComprehensiveIncomeParenthetical">
        <link:definition>9952154 - Statement - Condensed Consolidated Statements of Comprehensive Income (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="CondensedConsolidatedStatementsofShareholdersEquity" roleURI="http://www.reitmr.com/role/CondensedConsolidatedStatementsofShareholdersEquity">
        <link:definition>9952155 - Statement - Condensed Consolidated Statements of Shareholders' 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.reitmr.com/role/CondensedConsolidatedStatementsofCashFlows">
        <link:definition>9952156 - 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="Organization" roleURI="http://www.reitmr.com/role/Organization">
        <link:definition>9952157 - Disclosure - Organization</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="BasisofPresentation" roleURI="http://www.reitmr.com/role/BasisofPresentation">
        <link:definition>9952158 - Disclosure - 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="RelatedPersonTransactions" roleURI="http://www.reitmr.com/role/RelatedPersonTransactions">
        <link:definition>9952159 - Disclosure - Related Person Transactions</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="RevenueRecognition" roleURI="http://www.reitmr.com/role/RevenueRecognition">
        <link:definition>9952160 - Disclosure - Revenue Recognition</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="LoansHeldforInvestmentNet" roleURI="http://www.reitmr.com/role/LoansHeldforInvestmentNet">
        <link:definition>9952161 - Disclosure - Loans Held for Investment, Net</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="Indebtedness" roleURI="http://www.reitmr.com/role/Indebtedness">
        <link:definition>9952162 - Disclosure - Indebtedness</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="DerivativesandHedgingActivities" roleURI="http://www.reitmr.com/role/DerivativesandHedgingActivities">
        <link:definition>9952163 - Disclosure - Derivatives and Hedging Activities</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="Investments" roleURI="http://www.reitmr.com/role/Investments">
        <link:definition>9952164 - Disclosure - Investments</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="IncomeTaxes" roleURI="http://www.reitmr.com/role/IncomeTaxes">
        <link:definition>9952165 - Disclosure - 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="FairValueofFinancialInstruments" roleURI="http://www.reitmr.com/role/FairValueofFinancialInstruments">
        <link:definition>9952166 - Disclosure - Fair Value of Financial Instruments</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="ShareholdersEquity" roleURI="http://www.reitmr.com/role/ShareholdersEquity">
        <link:definition>9952167 - Disclosure - Shareholders&#8217; 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="PerCommonShareAmounts" roleURI="http://www.reitmr.com/role/PerCommonShareAmounts">
        <link:definition>9952168 - Disclosure - Per Common Share Amounts</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="NetIncomeAttributabletoRMRInc" roleURI="http://www.reitmr.com/role/NetIncomeAttributabletoRMRInc">
        <link:definition>9952169 - Disclosure - Net Income Attributable to RMR Inc.</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="SegmentReporting" roleURI="http://www.reitmr.com/role/SegmentReporting">
        <link:definition>9952170 - Disclosure - Segment Reporting</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="BasisofPresentationPolicies" roleURI="http://www.reitmr.com/role/BasisofPresentationPolicies">
        <link:definition>9955511 - Disclosure - Basis of Presentation (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="RelatedPersonTransactionsTables" roleURI="http://www.reitmr.com/role/RelatedPersonTransactionsTables">
        <link:definition>9955512 - Disclosure - Related Person Transactions (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="RevenueRecognitionTables" roleURI="http://www.reitmr.com/role/RevenueRecognitionTables">
        <link:definition>9955513 - Disclosure - Revenue Recognition (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="DerivativesandHedgingActivitiesTables" roleURI="http://www.reitmr.com/role/DerivativesandHedgingActivitiesTables">
        <link:definition>9955514 - Disclosure - Derivatives and Hedging Activities (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="IncomeTaxesTables" roleURI="http://www.reitmr.com/role/IncomeTaxesTables">
        <link:definition>9955515 - Disclosure - Income Taxes (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="FairValueofFinancialInstrumentsTables" roleURI="http://www.reitmr.com/role/FairValueofFinancialInstrumentsTables">
        <link:definition>9955516 - Disclosure - Fair Value of Financial Instruments (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="ShareholdersEquityTables" roleURI="http://www.reitmr.com/role/ShareholdersEquityTables">
        <link:definition>9955517 - Disclosure - Shareholders&#8217; Equity (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="PerCommonShareAmountsTables" roleURI="http://www.reitmr.com/role/PerCommonShareAmountsTables">
        <link:definition>9955518 - Disclosure - Per Common Share Amounts (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="NetIncomeAttributabletoRMRIncTables" roleURI="http://www.reitmr.com/role/NetIncomeAttributabletoRMRIncTables">
        <link:definition>9955519 - Disclosure - Net Income Attributable to RMR Inc. (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="OrganizationDetails" roleURI="http://www.reitmr.com/role/OrganizationDetails">
        <link:definition>9955520 - Disclosure - Organization (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="RelatedPersonTransactionsScheduleofRevenuesfromRelatedPartiesDetails" roleURI="http://www.reitmr.com/role/RelatedPersonTransactionsScheduleofRevenuesfromRelatedPartiesDetails">
        <link:definition>9955521 - Disclosure - Related Person Transactions - Schedule of Revenues from Related Parties (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="RelatedPersonTransactionsScheduleofAmountDuefromRelatedPartiesDetails" roleURI="http://www.reitmr.com/role/RelatedPersonTransactionsScheduleofAmountDuefromRelatedPartiesDetails">
        <link:definition>9955522 - Disclosure - Related Person Transactions - Schedule of Amount Due from Related Parties (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="RelatedPersonTransactionsNarrativeDetails" roleURI="http://www.reitmr.com/role/RelatedPersonTransactionsNarrativeDetails">
        <link:definition>9955523 - Disclosure - Related Person Transactions - 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="RelatedPersonTransactionsScheduleofTaxDistributionsDetails" roleURI="http://www.reitmr.com/role/RelatedPersonTransactionsScheduleofTaxDistributionsDetails">
        <link:definition>9955524 - Disclosure - Related Person Transactions - Schedule of Tax Distributions (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="RevenueRecognitionManagementAgreementsDetails" roleURI="http://www.reitmr.com/role/RevenueRecognitionManagementAgreementsDetails">
        <link:definition>9955525 - Disclosure - Revenue Recognition - Management Agreements (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="RevenueRecognitionNarrativeDetails" roleURI="http://www.reitmr.com/role/RevenueRecognitionNarrativeDetails">
        <link:definition>9955526 - Disclosure - Revenue Recognition - 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="LoansHeldforInvestmentNetDetails" roleURI="http://www.reitmr.com/role/LoansHeldforInvestmentNetDetails">
        <link:definition>9955527 - Disclosure - Loans Held for Investment, Net (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="IndebtednessDetails" roleURI="http://www.reitmr.com/role/IndebtednessDetails">
        <link:definition>9955528 - Disclosure - Indebtedness (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="DerivativesandHedgingActivitiesScheduleofInterestRateDerivativesDetails" roleURI="http://www.reitmr.com/role/DerivativesandHedgingActivitiesScheduleofInterestRateDerivativesDetails">
        <link:definition>9955529 - Disclosure - Derivatives and Hedging Activities - Schedule of Interest Rate Derivatives (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="DerivativesandHedgingActivitiesNarrativeDetails" roleURI="http://www.reitmr.com/role/DerivativesandHedgingActivitiesNarrativeDetails">
        <link:definition>9955530 - Disclosure - Derivatives and Hedging Activities - 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="DerivativesandHedgingActivitiesScheduleofEffectsonConsolidatedStatementsofIncomeandComprehensiveLossDetails" roleURI="http://www.reitmr.com/role/DerivativesandHedgingActivitiesScheduleofEffectsonConsolidatedStatementsofIncomeandComprehensiveLossDetails">
        <link:definition>9955531 - Disclosure - Derivatives and Hedging Activities - Schedule of Effects on Consolidated Statements of Income and Comprehensive Loss (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="InvestmentsDetails" roleURI="http://www.reitmr.com/role/InvestmentsDetails">
        <link:definition>9955532 - Disclosure - Investments (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="IncomeTaxesNarrativeDetails" roleURI="http://www.reitmr.com/role/IncomeTaxesNarrativeDetails">
        <link:definition>9955533 - Disclosure - Income Taxes - 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="IncomeTaxesScheduleofReconciliationofIncomeTaxRateDetails" roleURI="http://www.reitmr.com/role/IncomeTaxesScheduleofReconciliationofIncomeTaxRateDetails">
        <link:definition>9955534 - Disclosure - Income Taxes - Schedule of Reconciliation of Income Tax Rate (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="FairValueofFinancialInstrumentsScheduleofFinancialInstrumentsNotCarriedatFairValueDetails" roleURI="http://www.reitmr.com/role/FairValueofFinancialInstrumentsScheduleofFinancialInstrumentsNotCarriedatFairValueDetails">
        <link:definition>9955535 - Disclosure - Fair Value of Financial Instruments - Schedule of Financial Instruments Not Carried 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="FairValueofFinancialInstrumentsScheduleofMeasuredatFairValueDetails" roleURI="http://www.reitmr.com/role/FairValueofFinancialInstrumentsScheduleofMeasuredatFairValueDetails">
        <link:definition>9955536 - Disclosure - Fair Value of Financial Instruments - Schedule of 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="FairValueofFinancialInstrumentsScheduleofValuationTechniquesDetails" roleURI="http://www.reitmr.com/role/FairValueofFinancialInstrumentsScheduleofValuationTechniquesDetails">
        <link:definition>9955537 - Disclosure - Fair Value of Financial Instruments - Schedule of Valuation Techniques (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="FairValueofFinancialInstrumentsScheduleofUnobservableInputsReconciliationDetails" roleURI="http://www.reitmr.com/role/FairValueofFinancialInstrumentsScheduleofUnobservableInputsReconciliationDetails">
        <link:definition>9955538 - Disclosure - Fair Value of Financial Instruments - Schedule of Unobservable Inputs Reconciliation (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="ShareholdersEquityNarrativeDetails" roleURI="http://www.reitmr.com/role/ShareholdersEquityNarrativeDetails">
        <link:definition>9955539 - Disclosure - Shareholders&#8217; Equity - 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="ShareholdersEquityScheduleofDistributionsDetails" roleURI="http://www.reitmr.com/role/ShareholdersEquityScheduleofDistributionsDetails">
        <link:definition>9955540 - Disclosure - Shareholders&#8217; Equity - Schedule of Distributions (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="PerCommonShareAmountsNarrativeDetails" roleURI="http://www.reitmr.com/role/PerCommonShareAmountsNarrativeDetails">
        <link:definition>9955541 - Disclosure - Per Common Share Amounts - 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="PerCommonShareAmountsScheduleofEarningsPerShareDetails" roleURI="http://www.reitmr.com/role/PerCommonShareAmountsScheduleofEarningsPerShareDetails">
        <link:definition>9955542 - Disclosure - Per Common Share Amounts - Schedule of 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="NetIncomeAttributabletoRMRIncDetails" roleURI="http://www.reitmr.com/role/NetIncomeAttributabletoRMRIncDetails">
        <link:definition>9955543 - Disclosure - Net Income Attributable to RMR Inc. (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="SegmentReportingDetails" roleURI="http://www.reitmr.com/role/SegmentReportingDetails">
        <link:definition>9955544 - Disclosure - Segment Reporting (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="rmr_CommonClassB2Member" abstract="true" name="CommonClassB2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_TaxReceivableAgreementObligationsNoncurrent" abstract="false" name="TaxReceivableAgreementObligationsNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_OtherAssetsAccumulatedAmortization" abstract="false" name="OtherAssetsAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_ReimbursementPayrollRelatedAndOtherCostsMember" abstract="true" name="ReimbursementPayrollRelatedAndOtherCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ReimbursementClientCompanyEquityBasedConpensationMember" abstract="true" name="ReimbursementClientCompanyEquityBasedConpensationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ReimbursementsOtherMember" abstract="true" name="ReimbursementsOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ReimbursedExpense" abstract="false" name="ReimbursedExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_RentalPropertyExpense" abstract="false" name="RentalPropertyExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_TransactionAndAcquisitionRelatedCostsOperatingExpense" abstract="false" name="TransactionAndAcquisitionRelatedCostsOperatingExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_RedeemableNoncontrollingInterestMember" abstract="true" name="RedeemableNoncontrollingInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_NonredeemableNoncontrollingInterestMember" abstract="true" name="NonredeemableNoncontrollingInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_DistributionMadetoLimitedLiabilityCompanyLLCMemberTaxDistributions" abstract="false" name="DistributionMadetoLimitedLiabilityCompanyLLCMemberTaxDistributions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_NoncontrollingInterestsIncreaseFromContributedCapital" abstract="false" name="NoncontrollingInterestsIncreaseFromContributedCapital" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_ResidentialFundMember" abstract="true" name="ResidentialFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_SevenHillsRealtyTrustMember" abstract="true" name="SevenHillsRealtyTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ServicePropertiesTrustMember" abstract="true" name="ServicePropertiesTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_AmortizationOfOtherAssets" abstract="false" name="AmortizationOfOtherAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_NoncashExpensePaidinCommonStock" abstract="false" name="NoncashExpensePaidinCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_IncreaseDecreaseinIncentiveFeeDuetoRelatedParty" abstract="false" name="IncreaseDecreaseinIncentiveFeeDuetoRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_PaymentstoNoncontrollingInterestsDividendsandTaxDistributions" abstract="false" name="PaymentstoNoncontrollingInterestsDividendsandTaxDistributions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_NetIncomeLossAttributableToParentAbstract" abstract="true" name="NetIncomeLossAttributableToParentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="rmr_NetIncomeLossAttributableToParentDisclosureTextBlock" abstract="false" name="NetIncomeLossAttributableToParentDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="rmr_NetIncomeAttributableToParentTableTextBlock" abstract="false" name="NetIncomeAttributableToParentTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="rmr_CapitalUnitRedeemableClassMember" abstract="true" name="CapitalUnitRedeemableClassMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_RMRLLCMember" abstract="true" name="RMRLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_AbpTrustMember" abstract="false" name="AbpTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_NumberOfManagedRealEstateInvestmentTrusts" abstract="false" name="NumberOfManagedRealEstateInvestmentTrusts" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="rmr_RelatedPartyAndNonrelatedPartyMember" abstract="true" name="RelatedPartyAndNonrelatedPartyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ManagedPublicRealEstateCapitalMember" abstract="true" name="ManagedPublicRealEstateCapitalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ManagedEquityREITMember" abstract="true" name="ManagedEquityREITMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_DiversifiedHealthcareTrustMember" abstract="true" name="DiversifiedHealthcareTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_IndustrialLogisticsPropertiesTrustMember" abstract="true" name="IndustrialLogisticsPropertiesTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_OfficePropertiesIncomeTrustMember" abstract="true" name="OfficePropertiesIncomeTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ManagedPrivateRealEstateCapitalMember" abstract="true" name="ManagedPrivateRealEstateCapitalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_SonestaInternationalHotelsCorporationMember" abstract="true" name="SonestaInternationalHotelsCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_RMRResidentialMember" abstract="true" name="RMRResidentialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_OtherPrivateEntitiesMember" abstract="true" name="OtherPrivateEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ReimbursableCostsRelatedParties" abstract="false" name="ReimbursableCostsRelatedParties" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_AbpTrustAndManagedReitMember" abstract="true" name="AbpTrustAndManagedReitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_AdamPortnoyMember" abstract="true" name="AdamPortnoyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_OPIManagementMember" abstract="true" name="OPIManagementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_UpCTransactionMember" abstract="true" name="UpCTransactionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_FormerNonexecutiveOfficerMember" abstract="true" name="FormerNonexecutiveOfficerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_GOVAndSelectIncomeREITMember" abstract="true" name="GOVAndSelectIncomeREITMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_TaxReceivableAgreementPaymentPercent" abstract="false" name="TaxReceivableAgreementPaymentPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="rmr_TaxReceivableAgreementObligationsCurrentAndNoncurrent" abstract="false" name="TaxReceivableAgreementObligationsCurrentAndNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_TaxReceivableAgreementObligationsCurrent" abstract="false" name="TaxReceivableAgreementObligationsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_SeveranceCostsCash" abstract="false" name="SeveranceCostsCash" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_SeveranceCostsEquity" abstract="false" name="SeveranceCostsEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_OfferingPricePerShare" abstract="false" name="OfferingPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="rmr_PaymentsForCommonStock" abstract="false" name="PaymentsForCommonStock" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_OwnershipPercentageByRelatedParties" abstract="false" name="OwnershipPercentageByRelatedParties" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="rmr_BusinessManagementFeeAgreementTerm" abstract="false" name="BusinessManagementFeeAgreementTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="rmr_BusinessManagementFeeSubjectToTerminationTerm" abstract="false" name="BusinessManagementFeeSubjectToTerminationTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="rmr_SharesReceivedAsPercentageOfOutstandingShares" abstract="false" name="SharesReceivedAsPercentageOfOutstandingShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="rmr_AdditionalSharesReceivedAsPercentageOfOutstandingSharesPerformanceMetrics" abstract="false" name="AdditionalSharesReceivedAsPercentageOfOutstandingSharesPerformanceMetrics" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="rmr_ConstructionSupervisionFeePercentage" abstract="false" name="ConstructionSupervisionFeePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="rmr_PropertyManagementRevenuesMember" abstract="true" name="PropertyManagementRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ConstructionSupervisionRevenuesMember" abstract="true" name="ConstructionSupervisionRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ManagedEquityREITsAndSEVNMember" abstract="true" name="ManagedEquityREITsAndSEVNMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_PrivateCapitalClientsMember" abstract="true" name="PrivateCapitalClientsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_AssetAcquisitionTransactionExpense" abstract="false" name="AssetAcquisitionTransactionExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_TwoFloatingRateMortgageLoansMember" abstract="true" name="TwoFloatingRateMortgageLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_FinancingReceivableNumberOfLoans" abstract="false" name="FinancingReceivableNumberOfLoans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="rmr_UBSMasterRepurchaseAgreementMember" abstract="true" name="UBSMasterRepurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_NumberOfRealEstatePropertiesCollateral" abstract="false" name="NumberOfRealEstatePropertiesCollateral" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="rmr_DebtInstrumentTermOfExtension" abstract="false" name="DebtInstrumentTermOfExtension" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="rmr_RaleighNCMortgageLoanInterestRateCapMember" abstract="true" name="RaleighNCMortgageLoanInterestRateCapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_OrlandoFLMortgageLoanInterestRateCapMember" abstract="true" name="OrlandoFLMortgageLoanInterestRateCapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_TransferrableRightsOfferingMember" abstract="true" name="TransferrableRightsOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_SharesPurchasedOutsideOfRightsOfferingMember" abstract="true" name="SharesPurchasedOutsideOfRightsOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_TremontRealityCapitalMember" abstract="true" name="TremontRealityCapitalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_CarrollMFVIILLCMember" abstract="true" name="CarrollMFVIILLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_CARROLLMultifamilyVentureVIILPMember" abstract="true" name="CARROLLMultifamilyVentureVIILPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_SunriseJVMember" abstract="true" name="SunriseJVMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ResidentialCommunityGreenwichMember" abstract="true" name="ResidentialCommunityGreenwichMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ResidentialCommunityPompanoBeachFLMember" abstract="true" name="ResidentialCommunityPompanoBeachFLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ResidentialCommunitySunriseFLMember" abstract="true" name="ResidentialCommunitySunriseFLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_EquityMethodInvestmentNumberOfSharesPurchasedInvestment" abstract="false" name="EquityMethodInvestmentNumberOfSharesPurchasedInvestment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="rmr_EquityMethodInvestmentNumberofSharesOwned" abstract="false" name="EquityMethodInvestmentNumberofSharesOwned" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="rmr_EmployeesMadeCapitalContributions" abstract="false" name="EmployeesMadeCapitalContributions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_NumberOfJointVentures" abstract="false" name="NumberOfJointVentures" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="rmr_AssetAcquisitionNumberOfUnitsAcquired" abstract="false" name="AssetAcquisitionNumberOfUnitsAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="rmr_TwoMortgageNotesPayableMember" abstract="true" name="TwoMortgageNotesPayableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_MFFundVIIMember" abstract="true" name="MFFundVIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_JointVentureMember" abstract="true" name="JointVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_OtherReceivablesRelatedPartyFairValueDisclosure" abstract="false" name="OtherReceivablesRelatedPartyFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_OtherPayablesRelatedPartyFairValueDisclosure" abstract="false" name="OtherPayablesRelatedPartyFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_MeasurementInputCapitalizationRatesMember" abstract="true" name="MeasurementInputCapitalizationRatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_MeasurementInputUnleveredInternalRateOfReturnMember" abstract="true" name="MeasurementInputUnleveredInternalRateOfReturnMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_MeasurementInputCapitalDeploymentVolatilityMember" abstract="true" name="MeasurementInputCapitalDeploymentVolatilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_ValuationTechniqueMonteCarloMember" abstract="true" name="ValuationTechniqueMonteCarloMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_CommonClassAndB1Member" abstract="true" name="CommonClassAndB1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_MembershipUnitsMember" abstract="true" name="MembershipUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_A2016OmnibusEquityPlanMember" abstract="true" name="A2016OmnibusEquityPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_RMRIncMember" abstract="true" name="RMRIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="rmr_IncrementalCommonSharesAttributableToDilutiveEffectOfContingentlyIssuableSharesIncomeLossAttributableToUnvestedParticipatingSecurities" abstract="false" name="IncrementalCommonSharesAttributableToDilutiveEffectOfContingentlyIssuableSharesIncomeLossAttributableToUnvestedParticipatingSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_IncrementalCommonSharesAttributableToDilutiveEffectOfContingentlyIssuableSharesIncomeLossAttributableToNoncontrollingInterest" abstract="false" name="IncrementalCommonSharesAttributableToDilutiveEffectOfContingentlyIssuableSharesIncomeLossAttributableToNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_IncrementalCommonSharesAttributableToDilutiveEffectOfContingentlyIssuableSharesIncomeTaxExpenseBenefit" abstract="false" name="IncrementalCommonSharesAttributableToDilutiveEffectOfContingentlyIssuableSharesIncomeTaxExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_IncomeTaxExpenseBenefitRedemptionOfNoncontrollingInterest" abstract="false" name="IncomeTaxExpenseBenefitRedemptionOfNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_WeightedAverageNumberOfSharesOutstandingBasicUnvestedParticipatingSecurities" abstract="false" name="WeightedAverageNumberOfSharesOutstandingBasicUnvestedParticipatingSecurities" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="rmr_IncomeTaxExpenseBenefitEstimateTaxRate" abstract="false" name="IncomeTaxExpenseBenefitEstimateTaxRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="rmr_FranchiseTaxExpenseAndInterestIncome" abstract="false" name="FranchiseTaxExpenseAndInterestIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestNet" abstract="false" name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="rmr_IncomeLossFromContinuingOperationsBeforeIncomeTaxes" abstract="false" name="IncomeLossFromContinuingOperationsBeforeIncomeTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
