<SEC-DOCUMENT>0001193125-25-215838-index.html : 20250925
<SEC-HEADER>0001193125-25-215838.hdr.sgml : 20250925
<ACCEPTANCE-DATETIME>20250924173341
ACCESSION NUMBER:		0001193125-25-215838
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20250925
DATE AS OF CHANGE:		20250924

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-06540
		FILM NUMBER:		251339765

	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>DEFA14A
<SEQUENCE>1
<FILENAME>d29024ddefa14a.htm
<DESCRIPTION>BLACKROCK MUNIYIELD QUALITY FUND III, INC. MYI
<TEXT>
Document 1 - file: d29024ddefa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g19138dsp003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g19138dsp003.jpg

</DOCUMENT>
</SEC-DOCUMENT>