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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 F4RL/PDC/OU4qSpU7GoIUJfe62CNlJb7f1E9DgzakV2NUGt5kyjeyVo+/TLltrRP
 TeniAsg2fI7sqf17K5lzxg==

<SEC-DOCUMENT>0001225208-09-018599.txt : 20090908
<SEC-HEADER>0001225208-09-018599.hdr.sgml : 20090907
<ACCEPTANCE-DATETIME>20090908161726
ACCESSION NUMBER:		0001225208-09-018599
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090904
FILED AS OF DATE:		20090908
DATE AS OF CHANGE:		20090908

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TOTH TERENCE J
		CENTRAL INDEX KEY:			0001277392

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-21579
		FILM NUMBER:		091058270

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Nuveen Floating Rate Income Opportunity Fund
		CENTRAL INDEX KEY:			0001289213
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MA

	BUSINESS ADDRESS:	
		STREET 1:		333 WEST WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		312-917-8146

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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Nuveen Floating Rate Income Fund 2
		DATE OF NAME CHANGE:	20040504
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-09-04</periodOfReport>

    <issuer>
        <issuerCik>0001289213</issuerCik>
        <issuerName>Nuveen Floating Rate Income Opportunity Fund</issuerName>
        <issuerTradingSymbol>JRO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001277392</rptOwnerCik>
            <rptOwnerName>TOTH TERENCE J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>333 W. WACKER DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2900</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-09-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1760</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.54</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8329</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Demark L. Winget/ Signed Under POA</signatureName>
        <signatureDate>2009-09-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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