<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/ncen" xmlns:ns1="http://www.sec.gov/edgar/common" xmlns:sccom="http://www.sec.gov/edgar/sccommon" xmlns:ncom="http://www.sec.gov/edgar/ncencommon" xmlns:iso="http://www.sec.gov/edgar/iso_statecodes" xmlns:exch="http://www.sec.gov/edgar/iso_exchangelist" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <schemaVersion>X0201</schemaVersion>
  <headerData>
    <submissionType>N-CEN</submissionType>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <issuerCredentials>
          <cik>0000836249</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>
      <investmentCompanyType>N-6</investmentCompanyType>
    </filerInfo>
    <seriesClass>
      <reportClass>
        <classInfo>
          <classId>C000027250</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Survivorship VUL GuardSM-->
        </classInfo>
        <classInfo>
          <classId>C000027251</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Strategic Variable Life(R) Plus-->
        </classInfo>
        <classInfo>
          <classId>C000027252</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Strategic Variable Life(R)-->
        </classInfo>
        <classInfo>
          <classId>C000027253</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Large Case Variable Life(R) Plus-->
        </classInfo>
        <classInfo>
          <classId>C000027254</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: VUL GuardSM-->
        </classInfo>
        <classInfo>
          <classId>C000027255</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Variable Universal Life II-->
        </classInfo>
        <classInfo>
          <classId>C000027256</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Survivorship Variable Universal Life II-->
        </classInfo>
        <classInfo>
          <classId>C000027257</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Variable Universal Life-->
        </classInfo>
        <classInfo>
          <classId>C000027258</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Survivorship Variable Universal Life-->
        </classInfo>
        <classInfo>
          <classId>C000027259</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Variable Life Select-->
        </classInfo>
        <classInfo>
          <classId>C000027260</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Variable Life Plus-->
        </classInfo>
        <classInfo>
          <classId>C000027261</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Strategic Group Variable Universal Life(R)-->
        </classInfo>
        <classInfo>
          <classId>C000066422</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Variable Universal Life III-->
        </classInfo>
        <classInfo>
          <classId>C000161953</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: Strategic Group Variable Universal Life(R) II-->
        </classInfo>
        <classInfo>
          <classId>C000182366</classId>
          <!--Field: Pseudo-Tag; ID: Class Name; Data: MassMutual Electrum (SM)-->
        </classInfo>
      </reportClass>
    </seriesClass>
  </headerData>
  <formData>
    <generalInfo reportEndingPeriod="2018-12-31" isReportPeriodLt12="N"/>
    <registrantInfo>
      <registrantFullName>MASSACHUSETTS MUTUAL VARIABLE LIFE SEPARATE ACCOUNT I</registrantFullName>
      <investmentCompFileNo>811-08075</investmentCompFileNo>
      <registrantCik>0000836249</registrantCik>
      <registrantLei>00000000000000000000</registrantLei>
      <registrantstreet1>1295 STATE STREET</registrantstreet1>
      <registrantcity>SPRINGFIELD</registrantcity>
      <registrantzipCode>01111</registrantzipCode>
      <registrantstate>US-MA</registrantstate>
      <registrantcountry>US</registrantcountry>
      <registrantphoneNumber>413-788-8411</registrantphoneNumber>
      <websites>
        <website webpage="www.massmutual.com"/>
      </websites>
      <locationBooksRecords>
        <locationBooksRecord>
          <officeName>Greg Davis</officeName>
          <officeAddress1>1295 State Street</officeAddress1>
          <officeCity>Springfield</officeCity>
          <officeStateCountry officeState="US-MA" officeCountry="US"/>
          <officeRecordsZipCode>01111</officeRecordsZipCode>
          <officePhone>413-788-8411</officePhone>
          <booksRecordsDesc>General ledger, accounting records, confirmations and customer records.</booksRecordsDesc>
        </locationBooksRecord>
      </locationBooksRecords>
      <isRegistrantFirstFiling>Y</isRegistrantFirstFiling>
      <isRegistrantLastFiling>N</isRegistrantLastFiling>
      <registrantFamilyInvComp isRegistrantFamilyInvComp="Y" familyInvCompFullName="MassMutual Family of VA/VL Registered Separate Accounts"/>
      <registrantClassificationType>N-6</registrantClassificationType>
      <isSecuritiesActRegistration>Y</isSecuritiesActRegistration>
      <chiefComplianceOfficers>
        <chiefComplianceOfficer>
          <ccoName>Christine Frederick</ccoName>
          <crdNumber>N/A</crdNumber>
          <ccoStreet1>1295 State Street</ccoStreet1>
          <ccoCity>Springfield</ccoCity>
          <ccoStateCountry ccoState="US-MA" ccoCountry="US"/>
          <ccoZipCode>01111</ccoZipCode>
          <ccoPhone>XXXXXX</ccoPhone>
          <isCcoChangedSinceLastFiling>N</isCcoChangedSinceLastFiling>
          <ccoEmployers>
            <ccoEmployer ccoEmployerName="N/A" ccoEmployerId="N/A"/>
          </ccoEmployers>
        </chiefComplianceOfficer>
      </chiefComplianceOfficers>
      <isRegistrantSubmittedMatter>N</isRegistrantSubmittedMatter>
      <isPreviousLegalProceeding>N</isPreviousLegalProceeding>
      <isPreviousProceedingTerminated>N</isPreviousProceedingTerminated>
      <isFinancialSupportDuringPeriod>N</isFinancialSupportDuringPeriod>
      <isExemptionFromAct>N</isExemptionFromAct>
      <principalUnderwriters>
        <principalUnderwriter>
          <principalUnderwriterName>MML Investors Services, LLC</principalUnderwriterName>
          <principalUnderwriterFileNumber>8-27250</principalUnderwriterFileNumber>
          <principalUnderwriterCrdNumber>000010409</principalUnderwriterCrdNumber>
          <principalUnderwriterLei>N/A</principalUnderwriterLei>
          <principalUnderWriterStateCountry principalUnderWriterState="US-MA" principalUnderWriterCountry="US"/>
          <isPrincipalUnderwriterAffiliatedWithRegistrant>Y</isPrincipalUnderwriterAffiliatedWithRegistrant>
        </principalUnderwriter>
        <principalUnderwriter>
          <principalUnderwriterName>MML Distributors, LLC</principalUnderwriterName>
          <principalUnderwriterFileNumber>8-48203</principalUnderwriterFileNumber>
          <principalUnderwriterCrdNumber>000038030</principalUnderwriterCrdNumber>
          <principalUnderwriterLei>N/A</principalUnderwriterLei>
          <principalUnderWriterStateCountry principalUnderWriterState="US-MA" principalUnderWriterCountry="US"/>
          <isPrincipalUnderwriterAffiliatedWithRegistrant>Y</isPrincipalUnderwriterAffiliatedWithRegistrant>
        </principalUnderwriter>
        <principalUnderwriter>
          <principalUnderwriterName>MML Strategic Distributors, LLC</principalUnderwriterName>
          <principalUnderwriterFileNumber>8-69322</principalUnderwriterFileNumber>
          <principalUnderwriterCrdNumber>000168638</principalUnderwriterCrdNumber>
          <principalUnderwriterLei>N/A</principalUnderwriterLei>
          <principalUnderWriterStateCountry principalUnderWriterState="US-MA" principalUnderWriterCountry="US"/>
          <isPrincipalUnderwriterAffiliatedWithRegistrant>Y</isPrincipalUnderwriterAffiliatedWithRegistrant>
        </principalUnderwriter>
      </principalUnderwriters>
      <isUnderwriterHiredOrTerminated>N</isUnderwriterHiredOrTerminated>
      <publicAccountants>
        <publicAccountant>
          <publicAccountantName>KPMG LLP</publicAccountantName>
          <pcaobNumber>185</pcaobNumber>
          <publicAccountantLei>5493003PVCIGA21K0K42</publicAccountantLei>
          <publicAccountantStateCountry publicAccountantState="US-CT" publicAccountantCountry="US"/>
        </publicAccountant>
      </publicAccountants>
      <isPublicAccountantChanged>N</isPublicAccountantChanged>
      <isOpinionOffered>N</isOpinionOffered>
      <isMaterialChange>N</isMaterialChange>
      <isAccountingPrincipleChange>N</isAccountingPrincipleChange>
    </registrantInfo>
    <unitInvestmentTrust>
      <depositors>
        <depositor>
          <depositorName>Massachusetts Mutual Life Insurance Company</depositorName>
          <depositorCrdNo>N/A</depositorCrdNo>
          <depositorLei>R6ZXK5P01NP6HXSY1S07</depositorLei>
          <depositorStateCountry depositorState="US-MA" depositorCountry="US"/>
          <depositorUltimateParentname>Massachusetts Mutual Life Insurance Company</depositorUltimateParentname>
        </depositor>
      </depositors>
      <uitAdmins>
        <uitAdmin>
          <uitAdminName>Massachusetts Mutual Life Insurance Company</uitAdminName>
          <uitAdminLei>R6ZXK5P01NP6HXSY1S07</uitAdminLei>
          <uitAdminStateCountry uitAdminState="US-MA" uitAdminCountry="US"/>
          <isUitAdminAffiliated>Y</isUitAdminAffiliated>
          <isUitAdminSubAdmin>N</isUitAdminSubAdmin>
        </uitAdmin>
      </uitAdmins>
      <isUitAdminHiredTerminated>N</isUitAdminHiredTerminated>
      <registrantSeparateInsuranceAccount isRegistrantSeparateInsuranceAccount="Y" separateAccountSeriesId="S000009841"/>
      <numOfContracts>50477</numOfContracts>
      <contractSecurities>
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        <contractSecurity separateAccountSecurityName="Strategic Variable Life (R) Plus" separateAccountContractId="C000027251" separateAccountTotalAsset="34901399.21" numContractsSold="0" grossPremiumReceived="421983.3" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="911915" contractValueRedeemedSection1035="0" numContractsAffectedRedeemed="0"/>
        <contractSecurity separateAccountSecurityName="Strategic Variable Life (R)" separateAccountContractId="C000027252" separateAccountTotalAsset="31031811.95" numContractsSold="0" grossPremiumReceived="373655.65" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="3537721" contractValueRedeemedSection1035="0" numContractsAffectedRedeemed="0"/>
        <contractSecurity separateAccountSecurityName="Large Case Variable Life (R) Plus" separateAccountContractId="C000027253" separateAccountTotalAsset="20430952.04" numContractsSold="0" grossPremiumReceived="325053.25" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="1133018" contractValueRedeemedSection1035="0" numContractsAffectedRedeemed="0"/>
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        <contractSecurity separateAccountSecurityName="Variable Universal Life II" separateAccountContractId="C000027255" separateAccountTotalAsset="474142372.9" numContractsSold="0" grossPremiumReceived="26505742.28" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="120707458" contractValueRedeemedSection1035="10410338.28" numContractsAffectedRedeemed="100"/>
        <contractSecurity separateAccountSecurityName="Survivorship Variable Universal Life II" separateAccountContractId="C000027256" separateAccountTotalAsset="17906060.78" numContractsSold="0" grossPremiumReceived="967369.35" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="3028160" contractValueRedeemedSection1035="1226687.49" numContractsAffectedRedeemed="1"/>
        <contractSecurity separateAccountSecurityName="Variable Universal Life" separateAccountContractId="C000027257" separateAccountTotalAsset="98562708.38" numContractsSold="0" grossPremiumReceived="5089527.32" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="11652450" contractValueRedeemedSection1035="1200202.71" numContractsAffectedRedeemed="13"/>
        <contractSecurity separateAccountSecurityName="Survivorship Variable Universal Life" separateAccountContractId="C000027258" separateAccountTotalAsset="7067804.79" numContractsSold="0" grossPremiumReceived="806424.35" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="606321" contractValueRedeemedSection1035="0" numContractsAffectedRedeemed="0"/>
        <contractSecurity separateAccountSecurityName="Variable Life Select" separateAccountContractId="C000027259" separateAccountTotalAsset="82271525.95" numContractsSold="0" grossPremiumReceived="3392727.62" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="8589798" contractValueRedeemedSection1035="968823.71" numContractsAffectedRedeemed="7"/>
        <contractSecurity separateAccountSecurityName="Variable Life Plus" separateAccountContractId="C000027260" separateAccountTotalAsset="23596675.86" numContractsSold="0" grossPremiumReceived="1330200.72" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="3859925" contractValueRedeemedSection1035="20633.99" numContractsAffectedRedeemed="1"/>
        <contractSecurity separateAccountSecurityName="Strategic Group Variable Universal Life(R)" separateAccountContractId="C000027261" separateAccountTotalAsset="56496174.11" numContractsSold="1823" grossPremiumReceived="44091244.17" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="9845570" contractValueRedeemedSection1035="3989887.45" numContractsAffectedRedeemed="102"/>
        <contractSecurity separateAccountSecurityName="Variable Universal Life III" separateAccountContractId="C000066422" separateAccountTotalAsset="30272231.5" numContractsSold="412" grossPremiumReceived="7113587.5" grossPremiumReceivedSection1035="3383146.67" numContractsAffected="93" contractValueRedeemed="6077901" contractValueRedeemedSection1035="79083.12" numContractsAffectedRedeemed="1"/>
        <contractSecurity separateAccountSecurityName="Strategic Group Variable Universal Life (R) II" separateAccountContractId="C000161953" separateAccountTotalAsset="2491364.81" numContractsSold="44" grossPremiumReceived="3501819" grossPremiumReceivedSection1035="0" numContractsAffected="0" contractValueRedeemed="101387" contractValueRedeemedSection1035="68321.68" numContractsAffectedRedeemed="1"/>
        <contractSecurity separateAccountSecurityName="MassMutual Electrum (SM)" separateAccountContractId="C000182366" separateAccountTotalAsset="714788.09" numContractsSold="13" grossPremiumReceived="447182.3" grossPremiumReceivedSection1035="661624.3" numContractsAffected="0" contractValueRedeemed="173939" contractValueRedeemedSection1035="0" numContractsAffectedRedeemed="0"/>
      </contractSecurities>
      <isRule6C7Reliance>N</isRule6C7Reliance>
      <isRule11A2Reliance>N</isRule11A2Reliance>
    </unitInvestmentTrust>
    <signature registrantSignedName="Massachusetts Mutual Variable Life Separate Account I" signedDate="2019-03-18" signature="/s/ Kenneth Langevin" title="Head of Accounting Operations"/>
  </formData>
</edgarSubmission>
