-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 E8DF+uOPdCmKNZgItg2mbk22ccmyTGkkywLiXNutdkHO8WJ7wPvu8Jg3cbeqw0NC
 F0NMS3OQ/OEdqUEWwZGodA==

<SEC-DOCUMENT>0000080661-11-000023.txt : 20110112
<SEC-HEADER>0000080661-11-000023.hdr.sgml : 20110112
<ACCEPTANCE-DATETIME>20110112162109
ACCESSION NUMBER:		0000080661-11-000023
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101229
FILED AS OF DATE:		20110112
DATE AS OF CHANGE:		20110112

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SHEARES BRADLEY T
		CENTRAL INDEX KEY:			0001181183

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09518
		FILM NUMBER:		11525698

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PROGRESSIVE CORP/OH/
		CENTRAL INDEX KEY:			0000080661
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				340963169
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6300 WILSON MILLS RD
		CITY:			MAYFIELD VILLAGE
		STATE:			OH
		ZIP:			44143
		BUSINESS PHONE:		4404615000

	MAIL ADDRESS:	
		STREET 1:		6300 WILSON MILLS RD
		CITY:			MAYFIELD VILLAGE
		STATE:			OH
		ZIP:			44143
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>f4aforbts1.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2010-12-29</periodOfReport>

    <dateOfOriginalSubmission>2010-12-30</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000080661</issuerCik>
        <issuerName>PROGRESSIVE CORP/OH/</issuerName>
        <issuerTradingSymbol>PGR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001181183</rptOwnerCik>
            <rptOwnerName>SHEARES BRADLEY T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6300 WILSON MILLS ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MAYFIELD VILLAGE</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44143</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock Unit / (Rest. Stock)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-12-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2171.9752</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>19.75</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2171.9752</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>45068.4756</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">1 for 1.</footnote>
        <footnote id="F2">These phantom shares were acquired upon the reinvestment of dividends pursuant to the terms of the plan.  The reporting person's December 30, 2010 Form 4 improperly reported this acquisition as a disposition (D) of phantom shares in Column 5 of Table II thereof.  This Form 4 amends the December 30, 2010 Form 4 to properly report the transaction as an acquisition (A) of phantom shares in Column 5 of Table II.</footnote>
        <footnote id="F3">The phantom stock units will be distributed in cash at the time elected by the reporting person, subject to the vesting provisions of the Plan.</footnote>
        <footnote id="F4">Expiration Date is the same as the Date Exercisable.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>David M. Coffey, by Power of Attorney</signatureName>
        <signatureDate>2011-01-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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