<SEC-DOCUMENT>0001181431-12-016264.txt : 20120312
<SEC-HEADER>0001181431-12-016264.hdr.sgml : 20120310
<ACCEPTANCE-DATETIME>20120312130825
ACCESSION NUMBER:		0001181431-12-016264
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20120229
FILED AS OF DATE:		20120312
DATE AS OF CHANGE:		20120312

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK MUNICIPAL INCOME QUALITY TRUST
		CENTRAL INDEX KEY:			0001181187
		IRS NUMBER:				000000000
		FISCAL YEAR END:			0831

	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 INSURED MUNICIPAL INCOME TRUST
		DATE OF NAME CHANGE:	20020904

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MUNICIPAL INCOME TRUST III
		DATE OF NAME CHANGE:	20020819

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MORGAN STANLEY
		CENTRAL INDEX KEY:			0000895421
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-21178
		FILM NUMBER:		12683201

	BUSINESS ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-761-4000

	MAIL ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER NAME:	
		FORMER CONFORMED NAME:	MORGAN STANLEY DEAN WITTER & CO
		DATE OF NAME CHANGE:	19980326

	FORMER NAME:	
		FORMER CONFORMED NAME:	DEAN WITTER DISCOVER & CO
		DATE OF NAME CHANGE:	19960315
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>rrd338232.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0204</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2012-02-29</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001181187</issuerCik>
        <issuerName>BLACKROCK MUNICIPAL INCOME QUALITY TRUST</issuerName>
        <issuerTradingSymbol>BSE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000895421</rptOwnerCik>
            <rptOwnerName>MORGAN STANLEY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1585 BROADWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10036</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Variable Rate Demand Preferred</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>72</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Subsidiary</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The reported securities are held by a wholly-owned subsidiary of the reporting person in its capacity as remarketing agent.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Morgan Stanley By: Christina Huffman, Authorized Signatory</signatureName>
        <signatureDate>2012-03-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
