<SEC-DOCUMENT>0001700264-17-000008.txt : 20170310
<SEC-HEADER>0001700264-17-000008.hdr.sgml : 20170310
<ACCEPTANCE-DATETIME>20170310105905
ACCESSION NUMBER:		0001700264-17-000008
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20170306
FILED AS OF DATE:		20170310
DATE AS OF CHANGE:		20170310

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS HIGH INCOME MUNICIPAL TRUST
		CENTRAL INDEX KEY:			0000845606
		IRS NUMBER:				043039022
		FISCAL YEAR END:			1130

	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 HIGH INCOME MUNICIPAL TRUST
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hardin Heidi
		CENTRAL INDEX KEY:			0001700264

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-05754
		FILM NUMBER:		17680661

	MAIL ADDRESS:	
		STREET 1:		MFS INVESTMENT MANAGEMENT
		STREET 2:		111 HUNTINGTON AVENUE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-03-06</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000845606</issuerCik>
        <issuerName>MFS HIGH INCOME MUNICIPAL TRUST</issuerName>
        <issuerTradingSymbol>CXE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001700264</rptOwnerCik>
            <rptOwnerName>Hardin Heidi</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>MFS INVESTMENT MANAGEMENT</rptOwnerStreet1>
            <rptOwnerStreet2>111 HUNTINGTON AVENUE</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02199</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Secretary</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>Christopher R. Bohane, By Power of Attorney</signatureName>
        <signatureDate>2017-03-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>poahardin.txt
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
<PAGE>

                               POWER OF ATTORNEY

The undersigned on his or her own behalf and on behalf of his or her estate,
heirs and assigns hereby constitutes and appoints, Thomas H. Connors, Susan A.
Pereira and Brian E. Langenfeld and each of them singly as true and lawful
attorneys with full power to them and each of them, to execute, on behalf of
the undersigned, in the capacity listed below, any and all statements or
reports under Section 16 of the Securities Exchange Act of 1934, as amended,
with respect to the beneficial ownership of reportable securities issued by MFS
California Municipal Fund, MFS Charter Income Trust, MFS Government Markets
Income Trust, MFS High Income Municipal Trust, MFS High Yield Municipal Trust,
MFS Intermediate High Income Fund, MFS Intermediate Income Trust, MFS
Investment Grade Municipal Trust, MFS Multimarket Income Trust, MFS Municipal
Income Trust and MFS Special Value Trust including, without limitation, all
initial statements of beneficial ownership on Form 3, all statements of changes
of beneficial ownership on Form 4 and all annual statements of beneficial
ownership on Form 5, and any and all other documents that may be required, from
time to time, to be filed with the Securities and Exchange Commission, to
execute any and all amendments or supplements to any such statements or forms,
and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, granting to
said attorney, full power and authority to do so and perform each and every act
and thing requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as the undersigned (or his or her estate,
heirs and assigns) might or could do in person, hereby ratifying and confirming
all that said attorneys or any of them may lawfully do or cause to be done by
virtue hereof.

   IN WITNESS WHEREOF, the undersigned has set his or her hand on this 6th day
of March, 2017.

/s/ Heidi Hardin
--------------------------
Heidi Hardin

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
