<SEC-DOCUMENT>0000844779-18-000202-index.html : 20180627
<SEC-HEADER>0000844779-18-000202.hdr.sgml : 20180627
<ACCEPTANCE-DATETIME>20180627140849
ACCESSION NUMBER:		0000844779-18-000202
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20180430
FILED AS OF DATE:		20180627
DATE AS OF CHANGE:		20180627
EFFECTIVENESS DATE:		20180627

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:		NSAR-B
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-07642
		FILM NUMBER:		18921364

	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>NSAR-B
<SEQUENCE>1
<FILENAME>answer.fil
<TEXT>
Document 1 - file: answer.fil

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>2
<FILENAME>77B_Muni7.txt
<TEXT>
Document 2 - file: 77B_Muni7.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77Q1 OTHR EXHB
<SEQUENCE>3
<FILENAME>MUA_77Q1e.txt
<TEXT>
Document 3 - file: MUA_77Q1e.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77O RULE 10F-3
<SEQUENCE>4
<FILENAME>77o30.txt
<TEXT>
Document 4 - file: 77o30.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77O RULE 10F-3
<SEQUENCE>5
<FILENAME>77o50.txt
<TEXT>
Document 5 - file: 77o50.txt

</DOCUMENT>
</SEC-DOCUMENT>