<SEC-DOCUMENT>0001752724-25-158181-index.html : 20250626
<SEC-HEADER>0001752724-25-158181.hdr.sgml : 20250626
<ACCEPTANCE-DATETIME>20250626121908
ACCESSION NUMBER:		0001752724-25-158181
CONFORMED SUBMISSION TYPE:	NPORT-P
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20250430
FILED AS OF DATE:		20250626
DATE AS OF CHANGE:		20250626
PERIOD START:           	20260131

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS SERIES TRUST III
		CENTRAL INDEX KEY:			0000225604
		ORGANIZATION NAME:           	
		EIN:				046414785
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0131

	FILING VALUES:
		FORM TYPE:		NPORT-P
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-02794
		FILM NUMBER:		251077289

	BUSINESS ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		21ST FLOOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		18006372929

	MAIL ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		21ST FLOOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MFS SERIES TRUST III /MA
		DATE OF NAME CHANGE:	19940411

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MFS HIGH INCOME FUND
		DATE OF NAME CHANGE:	19930408

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MASSACHUSETTS FINANCIAL HIGH INCOME TRUST
		DATE OF NAME CHANGE:	19920703
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000225604
<SERIES-ID>S000002428
<SERIES-NAME>MFS Global High Yield Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006484
<CLASS-CONTRACT-NAME>A
<CLASS-CONTRACT-TICKER-SYMBOL>MHOAX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006485
<CLASS-CONTRACT-NAME>B
<CLASS-CONTRACT-TICKER-SYMBOL>MHOBX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006486
<CLASS-CONTRACT-NAME>C
<CLASS-CONTRACT-TICKER-SYMBOL>MHOCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006487
<CLASS-CONTRACT-NAME>I
<CLASS-CONTRACT-TICKER-SYMBOL>MHOIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000064677
<CLASS-CONTRACT-NAME>R1
<CLASS-CONTRACT-TICKER-SYMBOL>MHORX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000064678
<CLASS-CONTRACT-NAME>R2
<CLASS-CONTRACT-TICKER-SYMBOL>MHOSX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000064679
<CLASS-CONTRACT-NAME>R3
<CLASS-CONTRACT-TICKER-SYMBOL>MHOTX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000064680
<CLASS-CONTRACT-NAME>R4
<CLASS-CONTRACT-TICKER-SYMBOL>MHOUX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000064681
<CLASS-CONTRACT-NAME>R6
<CLASS-CONTRACT-TICKER-SYMBOL>MHOVX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</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>img95d43ced1.gif
<TEXT>
Document 2 - file: img95d43ced1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>NPORT-EX
<SEQUENCE>3
<FILENAME>edgar.htm
<DESCRIPTION>NPORT PART F
<TEXT>
Document 3 - file: edgar.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>img0f962bee2.gif
<TEXT>
Document 4 - file: img0f962bee2.gif

</DOCUMENT>
</SEC-DOCUMENT>