<SEC-DOCUMENT>0001193125-25-196285-index.html : 20250905
<SEC-HEADER>0001193125-25-196285.hdr.sgml : 20250905
<ACCEPTANCE-DATETIME>20250904183151
ACCESSION NUMBER:		0001193125-25-196285
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20250905
DATE AS OF CHANGE:		20250904

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK MUNIYIELD QUALITY FUND III, INC.
		CENTRAL INDEX KEY:			0000883412
		ORGANIZATION NAME:           	
		EIN:				223165131
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-288718
		FILM NUMBER:		251294575

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		800-441-7762

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MUNIYIELD QUALITY FUND III, INC
		DATE OF NAME CHANGE:	20101109

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MUNIYIELD INSURED FUND, INC
		DATE OF NAME CHANGE:	20070612

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MUNIYIELD INSURED FUND INC
		DATE OF NAME CHANGE:	19920717
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>d15424d424b3.htm
<DESCRIPTION>BLACKROCK MUNIYIELD QUALITY FUND III, INC.
<TEXT>
Document 1 - file: d15424d424b3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g15424g02a88.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g15424g02a88.jpg

</DOCUMENT>
</SEC-DOCUMENT>