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ACCESSION NUMBER:		0001683863-24-000274
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		20
CONFORMED PERIOD OF REPORT:	20231130
FILED AS OF DATE:		20240125
DATE AS OF CHANGE:		20240125
EFFECTIVENESS DATE:		20240125

FILER:

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

	FILING VALUES:
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		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04992
		FILM NUMBER:		24560730

	BUSINESS ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
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		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLONIAL MUNICIPAL INCOME TRUST
		DATE OF NAME CHANGE:	19920703
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