<SEC-DOCUMENT>0001193125-25-230138-index.html : 20251003
<SEC-HEADER>0001193125-25-230138.hdr.sgml : 20251003
<ACCEPTANCE-DATETIME>20251003160919
ACCESSION NUMBER:		0001193125-25-230138
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		15
CONFORMED PERIOD OF REPORT:	20250731
FILED AS OF DATE:		20251003
DATE AS OF CHANGE:		20251003
EFFECTIVENESS DATE:		20251003

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-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06540
		FILM NUMBER:		251373849

	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-CSR
<SEQUENCE>1
<FILENAME>d927223dncsr.htm
<DESCRIPTION>BLACKROCK MUNIYIELD QUALITY FUND III, INC.
<TEXT>
Document 1 - file: d927223dncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d927223dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d927223dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d927223dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d927223dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.PROXYPOL
<SEQUENCE>4
<FILENAME>d927223dex99proxypol.htm
<DESCRIPTION>PROXY VOTING POLICY AND PROCEDURES
<TEXT>
Document 4 - file: d927223dex99proxypol.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g927223dsp16aa.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g927223dsp16aa.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g927223dsp16aaa.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g927223dsp16aaa.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g927223g40b00.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g927223g40b00.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g927223img1c934fd62.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g927223img1c934fd62.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g927223img3a0019f45.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g927223img3a0019f45.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g927223img7934ce0e3.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g927223img7934ce0e3.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g927223img992c38288.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g927223img992c38288.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g927223imga49a1fd11.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g927223imga49a1fd11.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g927223imgb26184dc7.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g927223imgb26184dc7.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>g927223imge27a493c6.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: g927223imge27a493c6.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>g927223imge377b1b14.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: g927223imge377b1b14.gif

</DOCUMENT>
</SEC-DOCUMENT>