<SEC-DOCUMENT>0001193125-19-113224-index.html : 20190422
<SEC-HEADER>0001193125-19-113224.hdr.sgml : 20190422
<ACCEPTANCE-DATETIME>20190422144835
ACCESSION NUMBER:		0001193125-19-113224
CONFORMED SUBMISSION TYPE:	N-Q
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20190228
FILED AS OF DATE:		20190422
DATE AS OF CHANGE:		20190422
EFFECTIVENESS DATE:		20190422

FILER:

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

	FILING VALUES:
		FORM TYPE:		N-Q
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04992
		FILM NUMBER:		19759237

	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-Q
<SEQUENCE>1
<FILENAME>d664871dnq.htm
<DESCRIPTION>MFS HIGH YIELD MUNICIPAL TRUST N-Q
<TEXT>
Document 1 - file: d664871dnq.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d664871dex99cert.htm
<DESCRIPTION>CERTIFICATIONS
<TEXT>
Document 2 - file: d664871dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g664871img71d06d682.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g664871img71d06d682.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g664871imgfc2726b61.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g664871imgfc2726b61.gif

</DOCUMENT>
</SEC-DOCUMENT>