<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xsi:schemaLocation="http://www.sec.gov/edgar/thirteenffiler eis_13F_Filer.xsd" xmlns="http://www.sec.gov/edgar/thirteenffiler" xmlns:ns1="http://www.sec.gov/edgar/common" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <headerData>
    <submissionType>13F-HR</submissionType>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags>
        <confirmingCopyFlag>false</confirmingCopyFlag>
        <returnCopyFlag>true</returnCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
      </flags>
      <filer>
        <credentials>
          <cik>0001103653</cik>
          <ccc>XXXXXXXX</ccc>
        </credentials>
      </filer>
      <periodOfReport>12-31-2018</periodOfReport>
    </filerInfo>
  </headerData>
  <formData>
    <coverPage>
      <reportCalendarOrQuarter>12-31-2018</reportCalendarOrQuarter>
      <filingManager>
        <name>MASSMUTUAL TRUST CO FSB/ADV</name>
        <address>
          <ns1:street1>100 Bright Meadow Blvd</ns1:street1>
          <ns1:city>Enfield</ns1:city>
          <ns1:stateOrCountry>CT</ns1:stateOrCountry>
          <ns1:zipCode>06082</ns1:zipCode>
        </address>
      </filingManager>
      <reportType>13F HOLDINGS REPORT</reportType>
      <form13FFileNumber>028-15866</form13FFileNumber>
      <provideInfoForInstruction5>Y</provideInfoForInstruction5>
      <additionalInformation>The MassMutual Trust Company is a wholly-owned subsidiary of Massachusetts Mutual Life Insurance Company (MassMutual). Wherever The MassMutual Trust Company has indicated that it exercises investment discretion with respect to the positions reported on this Form 13F, such positions shall be deemed reported on behalf of MassMutual to the extent that MassMutual is deemed to share investment discretion over the positions as a result of MassMutual's direct ownership interest in The MassMutual Trust Company.</additionalInformation>
    </coverPage>
    <signatureBlock>
      <name>Neil Kochen</name>
      <title>Chief Investment Officer</title>
      <phone>860-562-1300</phone>
      <signature>Neil Kochen</signature>
      <city>Enfield</city>
      <stateOrCountry>CT</stateOrCountry>
      <signatureDate>02-22-2019</signatureDate>
    </signatureBlock>
    <summaryPage>
      <otherIncludedManagersCount>0</otherIncludedManagersCount>
      <tableEntryTotal>992</tableEntryTotal>
      <tableValueTotal>1168483444</tableValueTotal>
      <isConfidentialOmitted>false</isConfidentialOmitted>
    </summaryPage>
  </formData>
</edgarSubmission>
