<SEC-DOCUMENT>0001752724-23-234890-index.html : 20231024
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<ACCEPTANCE-DATETIME>20231024092253
ACCESSION NUMBER:		0001752724-23-234890
CONFORMED SUBMISSION TYPE:	NPORT-P
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20230831
FILED AS OF DATE:		20231024
DATE AS OF CHANGE:		20231024
PERIOD START:           	20231130

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:		NPORT-P
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04992
		FILM NUMBER:		231341372

	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>
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<TYPE>NPORT-P
<SEQUENCE>1
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<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>imgc518d3ae2.gif
<TEXT>
Document 2 - file: imgc518d3ae2.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>imgcbc0c0e91.gif
<TEXT>
Document 3 - file: imgcbc0c0e91.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>NPORT-EX
<SEQUENCE>4
<FILENAME>NPORT_523B_12372614_0823.htm
<TEXT>
Document 4 - file: NPORT_523B_12372614_0823.htm

</DOCUMENT>
</SEC-DOCUMENT>