<SEC-DOCUMENT>0001193125-23-251245-index.html : 20231005
<SEC-HEADER>0001193125-23-251245.hdr.sgml : 20231005
<ACCEPTANCE-DATETIME>20231005103230
ACCESSION NUMBER:		0001193125-23-251245
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		24
CONFORMED PERIOD OF REPORT:	20230731
FILED AS OF DATE:		20231005
DATE AS OF CHANGE:		20231005
EFFECTIVENESS DATE:		20231005

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-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06540
		FILM NUMBER:		231310097

	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>d531006dncsr.htm
<DESCRIPTION>BLACKROCK MUNIYIELD QUALITY FUND III, INC.
<TEXT>
Document 1 - file: d531006dncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d531006dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d531006dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d531006dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d531006dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.PROXYPOL
<SEQUENCE>4
<FILENAME>d531006dex99proxypol.htm
<DESCRIPTION>PROXY VOTING POLICY AND PROCEDURES
<TEXT>
Document 4 - file: d531006dex99proxypol.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.GLOBALCORPGOV
<SEQUENCE>5
<FILENAME>d531006dex99globalcorpgov.htm
<DESCRIPTION>GLOBAL CORPORATE GOVERNANCE & ENGAGEMENT PRINCIPLES
<TEXT>
Document 5 - file: d531006dex99globalcorpgov.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.USCORPGOV
<SEQUENCE>6
<FILENAME>d531006dex99uscorpgov.htm
<DESCRIPTION>CORPORATE GOVERNANCE AND PROXY VOTING GUIDELINES FOR U.S. SECURITIES
<TEXT>
Document 6 - file: d531006dex99uscorpgov.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g482724bblk.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g482724bblk.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g482724black1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g482724black1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g482724black2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g482724black2.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g482724black24.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g482724black24.jpg

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<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g482724g42l24.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g482724g42l24.jpg

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<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g482724g50p51.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g482724g50p51.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g528083dsp1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g528083dsp1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>g528083dsp112.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: g528083dsp112.jpg

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<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>g528083dsp1a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: g528083dsp1a.jpg

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<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>g528083gdsp012.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: g528083gdsp012.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>g528083gdsp04.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: g528083gdsp04.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>g528083gdsp06.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: g528083gdsp06.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>g528083gdsp09.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 19 - file: g528083gdsp09.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>g528083gdsp15.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 20 - file: g528083gdsp15.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>g528083gdsp18.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 21 - file: g528083gdsp18.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>g528083gdsp21.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 22 - file: g528083gdsp21.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>g528083photo_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 23 - file: g528083photo_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>g528083sig_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 24 - file: g528083sig_01mips.jpg

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