<SEC-DOCUMENT>0001752724-25-089112-index.html : 20250513
<SEC-HEADER>0001752724-25-089112.hdr.sgml : 20250513
<ACCEPTANCE-DATETIME>20250424083755
ACCESSION NUMBER:		0001752724-25-089112
CONFORMED SUBMISSION TYPE:	NPORT-P
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20250228
FILED AS OF DATE:		20250424
DATE AS OF CHANGE:		20250424
PERIOD START:           	20251130

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS HIGH YIELD MUNICIPAL TRUST
		CENTRAL INDEX KEY:			0000809844
		ORGANIZATION NAME:           	
		EIN:				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:		25863756

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

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>imgd780ecf92.gif
<TEXT>
Document 2 - file: imgd780ecf92.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>imgfe2ea8471.gif
<TEXT>
Document 3 - file: imgfe2ea8471.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>NPORT-EX
<SEQUENCE>4
<FILENAME>NPORT_523B_34993574_0225.htm
<TEXT>
Document 4 - file: NPORT_523B_34993574_0225.htm

</DOCUMENT>
</SEC-DOCUMENT>