-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 IBojgeoQxOb/9Q4wU3Lgfw==

<SEC-DOCUMENT>0000914121-10-000086.txt : 20100115
<SEC-HEADER>0000914121-10-000086.hdr.sgml : 20100115
<ACCEPTANCE-DATETIME>20100115171636
ACCESSION NUMBER:		0000914121-10-000086
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091231
FILED AS OF DATE:		20100115
DATE AS OF CHANGE:		20100115

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NUVEEN MUNICIPAL MARKET OPPORTUNITY FUND INC
		CENTRAL INDEX KEY:			0000860188
		IRS NUMBER:				363689957
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		333 W WACKER DR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129178200

	MAIL ADDRESS:	
		STREET 1:		333 W WACKER
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BANK OF AMERICA CORP /DE/
		CENTRAL INDEX KEY:			0000070858
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-06040
		FILM NUMBER:		10531190

	BUSINESS ADDRESS:	
		STREET 1:		BANK OF AMERICA CORPORATE CENTER
		STREET 2:		100 N TRYON ST
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28255
		BUSINESS PHONE:		7043868486

	MAIL ADDRESS:	
		STREET 1:		BANK OF AMERICA CORPORATE CENTER
		STREET 2:		100 N TRYON ST
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28255

	FORMER NAME:	
		FORMER CONFORMED NAME:	BANKAMERICA CORP/DE/
		DATE OF NAME CHANGE:	19981022

	FORMER NAME:	
		FORMER CONFORMED NAME:	NATIONSBANK CORP
		DATE OF NAME CHANGE:	19920703

	FORMER NAME:	
		FORMER CONFORMED NAME:	NCNB CORP
		DATE OF NAME CHANGE:	19920107

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
		CENTRAL INDEX KEY:			0000728612
		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:	811-06040
		FILM NUMBER:		10531189

	BUSINESS ADDRESS:	
		STREET 1:		4 WORLD FINANCIAL CENTER
		STREET 2:		NORTH TOWER
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10080
		BUSINESS PHONE:		2126702273

	MAIL ADDRESS:	
		STREET 1:		4 WORLD FINANCIAL CENTER
		STREET 2:		NORTH TOWER
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10080

	FORMER NAME:	
		FORMER CONFORMED NAME:	MERRILL LYNCH PIERCE FENNER & SMITH INC
		DATE OF NAME CHANGE:	19920929

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BANK OF AMERICA NA
		CENTRAL INDEX KEY:			0001102113

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-06040
		FILM NUMBER:		10531188

	BUSINESS ADDRESS:	
		STREET 1:		100 N. TRYON STREET
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28255
		BUSINESS PHONE:		(704) 386-5494

	MAIL ADDRESS:	
		STREET 1:		100 N. TRYON STREET
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28255
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>p18148510-3_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2009-12-31</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000860188</issuerCik>
        <issuerName>NUVEEN MUNICIPAL MARKET OPPORTUNITY FUND INC</issuerName>
        <issuerTradingSymbol>NMO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000070858</rptOwnerCik>
            <rptOwnerName>BANK OF AMERICA CORP /DE/</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>BANK OF AMERICA CORPORATE CENTER</rptOwnerStreet1>
            <rptOwnerStreet2>100 N TRYON STREET</rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28255</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000728612</rptOwnerCik>
            <rptOwnerName>MERRILL LYNCH, PIERCE, FENNER &amp; SMITH INC.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4 WORLD FINANCIAL CENTER</rptOwnerStreet1>
            <rptOwnerStreet2>NORTH TOWER</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10080</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001102113</rptOwnerCik>
            <rptOwnerName>BANK OF AMERICA NA</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>100 N. TRYON STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28255</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Auction Rate Preferred</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1998</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Subsidiary</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The Auction Rate Preferred Shares (&quot;Shares&quot;) reported in Table 1 represent 647 Shares beneficially owned by Merrill Lynch,
 Pierce, Fenner &amp; Smith, Inc. (&quot;MLPFS&quot;) and 1351 Shares beneficially owned by Bank of America, N.A. (&quot;BANA&quot;). MLPFS and BANA
 are each indirect, wholly owned subsidiaries of Bank of America Corporation (&quot;Bank of America&quot;).</footnote>
    </footnotes>

    <remarks>The Shares reported herein represent Bank of America's combined holdings in multiple series of auction rate preferred
 securities of the issuer, which are treated herein as one class of securities in accordance with the Auction Rate
 Securities--Global Exemptive Relief no-action letter issued by the Securities and Exchange Commission (&quot;SEC&quot;) on September
 22, 2008. Bank of America undertakes to provide upon request by the SEC, the issuer or a security holder of the issuer,
 complete information regarding the number of equity securities of the issuer purchased or sold at each different price and
 date of all transactions in such securities that occurred after Bank of America became a 10% owner but prior to the date of
 this filing.</remarks>

    <ownerSignature>
        <signatureName>Bank of America Corporation and Bank of America, N.A. By: /s/ Debra I. Cho, Senior Vice President</signatureName>
        <signatureDate>2010-01-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Merrill Lynch, Pierce, Fenner &amp; Smith, Inc. By: /s/ Robert M. Shine, Attorney-In-Fact</signatureName>
        <signatureDate>2010-01-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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