<SEC-DOCUMENT>0000950123-21-009247.txt : 20210727
<SEC-HEADER>0000950123-21-009247.hdr.sgml : 20210727
<ACCEPTANCE-DATETIME>20210727142321
ACCESSION NUMBER:		0000950123-21-009247
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210720
FILED AS OF DATE:		20210727
DATE AS OF CHANGE:		20210727

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			JPMorgan Chase Bank, N.A.
		CENTRAL INDEX KEY:			0000835271
		STANDARD INDUSTRIAL CLASSIFICATION:	ASSET-BACKED SECURITIES [6189]
		STATE OF INCORPORATION:			X1
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-05754
		FILM NUMBER:		211117508

	BUSINESS ADDRESS:	
		STREET 1:		1111 POLARIS PARKWAY
		CITY:			COLUMBUS
		STATE:			OH
		ZIP:			43240
		BUSINESS PHONE:		212-648-0466

	MAIL ADDRESS:	
		STREET 1:		1111 POLARIS PARKWAY
		CITY:			COLUMBUS
		STATE:			OH
		ZIP:			43240

	FORMER NAME:	
		FORMER CONFORMED NAME:	JPMorgan Chase Bank, National Association
		DATE OF NAME CHANGE:	20050114

	FORMER NAME:	
		FORMER CONFORMED NAME:	CHASE MANHATTAN BANK /NY/
		DATE OF NAME CHANGE:	19960911

	FORMER NAME:	
		FORMER CONFORMED NAME:	CHEMICAL BANK
		DATE OF NAME CHANGE:	19930521

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
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-07-20</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000835271</rptOwnerCik>
            <rptOwnerName>JPMorgan Chase Bank, N.A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1111 POLARIS PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>COLUMBUS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>43240</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Variable Rate MuniFund Term Preferred Shares, Series 2051</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>975</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>JPMORGAN CHASE BANK, NATIONAL ASSOCIATION, by: /s/ Sean Saroya</signatureName>
        <signatureDate>2021-07-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
