<SEC-DOCUMENT>0001193125-17-111417-index.html : 20170405
<SEC-HEADER>0001193125-17-111417.hdr.sgml : 20170405
<ACCEPTANCE-DATETIME>20170405135101
ACCESSION NUMBER:		0001193125-17-111417
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20170131
FILED AS OF DATE:		20170405
DATE AS OF CHANGE:		20170405
EFFECTIVENESS DATE:		20170405

FILER:

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

	FILING VALUES:
		FORM TYPE:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06540
		FILM NUMBER:		17742030

	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>d337346dncsrs.htm
<DESCRIPTION>BLACKROCK MUNIYIELD QUALITY FUND III, INC.
<TEXT>
Document 1 - file: d337346dncsrs.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d337346dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d337346dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d337346dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d337346dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g322615photo_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g322615photo_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g322615sig_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g322615sig_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g337303g03x32.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g337303g03x32.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g337303g12k03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g337303g12k03.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g337303g26e41.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g337303g26e41.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g337303g29k39.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g337303g29k39.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g337303g65b16.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g337303g65b16.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g337303g74u80.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g337303g74u80.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g337303g98u13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g337303g98u13.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g337303leaf.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g337303leaf.jpg

</DOCUMENT>
</SEC-DOCUMENT>