<SEC-DOCUMENT>0001104659-24-093465.txt : 20240827
<SEC-HEADER>0001104659-24-093465.hdr.sgml : 20240827
<ACCEPTANCE-DATETIME>20240827164006
ACCESSION NUMBER:		0001104659-24-093465
CONFORMED SUBMISSION TYPE:	N-PX
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240630
FILED AS OF DATE:		20240827
DATE AS OF CHANGE:		20240827
EFFECTIVENESS DATE:		20240827

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS HIGH YIELD MUNICIPAL TRUST
		CENTRAL INDEX KEY:			0000809844
		ORGANIZATION NAME:           	
		IRS NUMBER:				042950868
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		N-PX
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04992
		FILM NUMBER:		241249687

	BUSINESS ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		617-954-5000

	MAIL ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLONIAL MUNICIPAL INCOME TRUST
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-PX
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/npx" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>N-PX</submissionType>
    <filerInfo>
      <registrantType>RMIC</registrantType>
      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <issuerCredentials>
          <cik>0000809844</cik>
          <ccc>XXXXXXXX</ccc>
          <!--Field: Pseudo-Tag; ID: Name; Data:-->
        </issuerCredentials>
      </filer>
      <flags>
        <overrideInternetFlag>false</overrideInternetFlag>
        <confirmingCopyFlag>false</confirmingCopyFlag>
      </flags>
      <investmentCompanyType>N-2</investmentCompanyType>
      <periodOfReport>06/30/2024</periodOfReport>
    </filerInfo>
  </headerData>
  <formData>
    <coverPage>
      <yearOrQuarter>YEAR</yearOrQuarter>
      <reportCalendarYear>2024</reportCalendarYear>
      <reportingPerson>
        <name>MFS HIGH YIELD MUNICIPAL TRUST</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 NOTICE REPORT</reportType>
      </reportInfo>
      <fileNumber>811-04992</fileNumber>
      <reportingSecFileNumber>811-04992</reportingSecFileNumber>
      <leiNumber>A8WLLLHJKX1MW5QPZU93</leiNumber>
      <explanatoryInformation>
        <explanatoryChoice>Y</explanatoryChoice>
        <explanatoryNotes>On behalf of MFS High Yield Municipal Trust, there is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period.</explanatoryNotes>
      </explanatoryInformation>
    </coverPage>
    <seriesPage>
      <seriesCount>0</seriesCount>
    </seriesPage>
    <signaturePage>
      <reportingPerson>MFS HIGH YIELD MUNICIPAL TRUST</reportingPerson>
      <txSignature>David DiLorenzo</txSignature>
      <txPrintedSignature>David DiLorenzo</txPrintedSignature>
      <txTitle>President and Principal Executive Officer</txTitle>
      <txAsOfDate>08/27/2024</txAsOfDate>
    </signaturePage>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
