<SEC-DOCUMENT>0001193125-25-074486-index.html : 20250407
<SEC-HEADER>0001193125-25-074486.hdr.sgml : 20250407
<ACCEPTANCE-DATETIME>20250407131612
ACCESSION NUMBER:		0001193125-25-074486
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		6
CONFORMED PERIOD OF REPORT:	20250131
FILED AS OF DATE:		20250407
DATE AS OF CHANGE:		20250407
EFFECTIVENESS DATE:		20250407

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:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06540
		FILM NUMBER:		25817383

	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>N-CSRS
<SEQUENCE>1
<FILENAME>d915534dncsrs.htm
<DESCRIPTION>BLACKROCK MUNIYIELD QUALITY FUND III, INC.
<TEXT>
Document 1 - file: d915534dncsrs.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d915534dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d915534dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d915534dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d915534dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g915534img00c582ad1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g915534img00c582ad1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g915534img49c95c823.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g915534img49c95c823.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g915534imgbafbb11b2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g915534imgbafbb11b2.jpg

</DOCUMENT>
</SEC-DOCUMENT>