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    <submissionType>N-PX</submissionType>
    <filerInfo>
      <registrantType>RMIC</registrantType>
      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <issuerCredentials>
          <cik>0001065698</cik>
          <ccc>XXXXXXXX</ccc>
          <!--Field: Pseudo-Tag; ID: Name; Data:-->
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      </filer>
      <flags>
        <overrideInternetFlag>false</overrideInternetFlag>
        <confirmingCopyFlag>false</confirmingCopyFlag>
      </flags>
      <investmentCompanyType>N-1A</investmentCompanyType>
      <periodOfReport>06/30/2024</periodOfReport>
    </filerInfo>
    <seriesClass>
      <reportSeriesClass>
        <rptSeriesClassInfo>
          <seriesId>S000008069</seriesId>
          <!--Field: Pseudo-Tag; ID: Series Name; Data: MFS Global Real Estate Portfolio-->
          <classInfo>
            <classId>C000021901</classId>
            <!--Field: Pseudo-Tag; ID: Class Name; Data: Initial Class-->
          </classInfo>
          <classInfo>
            <classId>C000021902</classId>
            <!--Field: Pseudo-Tag; ID: Class Name; Data: Service Class-->
          </classInfo>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000023374</seriesId>
          <!--Field: Pseudo-Tag; ID: Series Name; Data: MFS New Discovery Value Portfolio-->
          <classInfo>
            <classId>C000068446</classId>
            <!--Field: Pseudo-Tag; ID: Class Name; Data: Initial Class-->
          </classInfo>
          <classInfo>
            <classId>C000068447</classId>
            <!--Field: Pseudo-Tag; ID: Class Name; Data: Service Class-->
          </classInfo>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000008071</seriesId>
          <!--Field: Pseudo-Tag; ID: Series Name; Data: MFS Blended Research Small Cap Equity Portfolio-->
          <classInfo>
            <classId>C000021905</classId>
            <!--Field: Pseudo-Tag; ID: Class Name; Data: Initial Class-->
          </classInfo>
          <classInfo>
            <classId>C000021906</classId>
            <!--Field: Pseudo-Tag; ID: Class Name; Data: Service Class-->
          </classInfo>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000018843</seriesId>
          <!--Field: Pseudo-Tag; ID: Series Name; Data: MFS Mid Cap Value Portfolio-->
          <classInfo>
            <classId>C000052149</classId>
            <!--Field: Pseudo-Tag; ID: Class Name; Data: Initial Class-->
          </classInfo>
          <classInfo>
            <classId>C000052150</classId>
            <!--Field: Pseudo-Tag; ID: Class Name; Data: Service Class-->
          </classInfo>
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      </reportSeriesClass>
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  <formData>
    <coverPage>
      <yearOrQuarter>YEAR</yearOrQuarter>
      <reportCalendarYear>2024</reportCalendarYear>
      <reportingPerson>
        <name>MFS VARIABLE INSURANCE TRUST III</name>
        <phoneNumber>617-954-5000</phoneNumber>
        <address>
          <com:street1>111 Huntington Ave</com:street1>
          <com:street2>21St Floor</com:street2>
          <com:city>Boston</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02199</com:zipCode>
        </address>
      </reportingPerson>
      <reportInfo>
        <reportType>FUND VOTING REPORT</reportType>
      </reportInfo>
      <fileNumber>811-08879</fileNumber>
      <reportingSecFileNumber>811-08879</reportingSecFileNumber>
      <leiNumber>549300QPPZUNGK3D0K61</leiNumber>
      <explanatoryInformation>
        <explanatoryChoice>Y</explanatoryChoice>
        <explanatoryNotes>"There may be instances in this report where a voting instruction is not included for a ballot item at a meeting. This typically occurs when the item is not an item for which a vote is requested (e.g., the receipt of a report by the company's management or board or the opening or closing of the meeting)."</explanatoryNotes>
      </explanatoryInformation>
    </coverPage>
    <summaryPage>
      <otherIncludedManagersCount>0</otherIncludedManagersCount>
    </summaryPage>
    <seriesPage>
      <seriesCount>4</seriesCount>
      <seriesDetails>
        <seriesReports>
          <idOfSeries>S000008069</idOfSeries>
          <nameOfSeries>MFS Global Real Estate Portfolio</nameOfSeries>
          <leiOfSeries>549300YBJ6K5SOLBY732</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000023374</idOfSeries>
          <nameOfSeries>MFS New Discovery Value Portfolio</nameOfSeries>
          <leiOfSeries>549300X8U0YDKOFKNA72</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000008071</idOfSeries>
          <nameOfSeries>MFS Blended Research Small Cap Equity Portfolio</nameOfSeries>
          <leiOfSeries>549300LCT4OBD7GTZH63</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000018843</idOfSeries>
          <nameOfSeries>MFS Mid Cap Value Portfolio</nameOfSeries>
          <leiOfSeries>549300DTS6NIQDMEIL78</leiOfSeries>
        </seriesReports>
      </seriesDetails>
    </seriesPage>
    <signaturePage>
      <reportingPerson>MFS VARIABLE INSURANCE TRUST III</reportingPerson>
      <txSignature>David DiLorenzo</txSignature>
      <txPrintedSignature>David DiLorenzo</txPrintedSignature>
      <txTitle>President and Principal Executive Officer</txTitle>
      <txAsOfDate>08/27/2024</txAsOfDate>
    </signaturePage>
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