<SEC-DOCUMENT>0001193125-15-242664-index.html : 20150701
<SEC-HEADER>0001193125-15-242664.hdr.sgml : 20150701
<ACCEPTANCE-DATETIME>20150701125212
ACCESSION NUMBER:		0001193125-15-242664
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		19
CONFORMED PERIOD OF REPORT:	20150430
FILED AS OF DATE:		20150701
DATE AS OF CHANGE:		20150701
EFFECTIVENESS DATE:		20150701

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-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-07642
		FILM NUMBER:		15964073

	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-CSR
<SEQUENCE>1
<FILENAME>d919060dncsr.htm
<DESCRIPTION>BLACKROCK MUNIASSETS FUND, INC.
<TEXT>
Document 1 - file: d919060dncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d919060dex99cert.htm
<DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d919060dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d919060dex99906cert.htm
<DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d919060dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.PROXYPOL
<SEQUENCE>4
<FILENAME>d919060dex99proxypol.htm
<DESCRIPTION>PROXY VOTING POLICY
<TEXT>
Document 4 - file: d919060dex99proxypol.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g918949photo_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g918949photo_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g918949sig_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g918949sig_01mips.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g919060b.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g919060b.jpg

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<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g919060ex99_proxylogo.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g919060ex99_proxylogo.jpg

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<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g919060g09g62.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g919060g09g62.jpg

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<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g919060g09h65.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g919060g09h65.jpg

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<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g919060g41l68.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g919060g41l68.jpg

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<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g919060g44u23.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g919060g44u23.jpg

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<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g919060g51n99.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g919060g51n99.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>g919060g60p62.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: g919060g60p62.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>g919060g62e83.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: g919060g62e83.jpg

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<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>g919060g65b16.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: g919060g65b16.jpg

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<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>g919060g83y23.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: g919060g83y23.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>g919060g98u13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: g919060g98u13.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>g919060leaf.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 19 - file: g919060leaf.jpg

</DOCUMENT>
</SEC-DOCUMENT>