<SEC-DOCUMENT>0001193125-20-001173-index.html : 20200103
<SEC-HEADER>0001193125-20-001173.hdr.sgml : 20200103
<ACCEPTANCE-DATETIME>20200103112919
ACCESSION NUMBER:		0001193125-20-001173
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		15
CONFORMED PERIOD OF REPORT:	20191031
FILED AS OF DATE:		20200103
DATE AS OF CHANGE:		20200103
EFFECTIVENESS DATE:		20200103

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK MUNIASSETS FUND, INC.
		CENTRAL INDEX KEY:			0000901243
		IRS NUMBER:				223239638
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-07642
		FILM NUMBER:		20503871

	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:	MUNIASSETS FUND INC
		DATE OF NAME CHANGE:	19930714

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MUNIINCOME FUND INC
		DATE OF NAME CHANGE:	19930517
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSRS
<SEQUENCE>1
<FILENAME>d799892dncsrs.htm
<DESCRIPTION>BLACKROCK MUNIASSETS FUND, INC
<TEXT>
Document 1 - file: d799892dncsrs.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d799892dex99cert.htm
<DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d799892dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906 CERT
<SEQUENCE>3
<FILENAME>d799892dex99906cert.htm
<DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d799892dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g798985photo_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g798985photo_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g798985sig_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g798985sig_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g799892g09g62.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g799892g09g62.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g799892g09h65.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g799892g09h65.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g799892g41l68.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g799892g41l68.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g799892g42l24.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g799892g42l24.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g799892g44u23.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g799892g44u23.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g799892g51n99.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g799892g51n99.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g799892g60p62.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g799892g60p62.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g799892g62e83.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g799892g62e83.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>g799892g83y23.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: g799892g83y23.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>g799892leaf.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: g799892leaf.jpg

</DOCUMENT>
</SEC-DOCUMENT>