-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
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 G1xsbv3/k/SksLnQp/Fg7A==

<SEC-DOCUMENT>0001179110-10-017691.txt : 20101216
<SEC-HEADER>0001179110-10-017691.hdr.sgml : 20101216
<ACCEPTANCE-DATETIME>20101216171201
ACCESSION NUMBER:		0001179110-10-017691
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101214
FILED AS OF DATE:		20101216
DATE AS OF CHANGE:		20101216

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Graham Donald C.
		CENTRAL INDEX KEY:			0001483061

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34621
		FILM NUMBER:		101257560

	MAIL ADDRESS:	
		STREET 1:		1420 SIXTH AVENUE
		CITY:			YORK
		STATE:			PA
		ZIP:			17403

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Graham Packaging Co Inc.
		CENTRAL INDEX KEY:			0001478085
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS PLASTIC PRODUCTS [3080]
		IRS NUMBER:				522076126
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2401 PLEASANT VALLEY ROAD
		CITY:			YORK
		STATE:			PA
		ZIP:			17402
		BUSINESS PHONE:		(717) 849-8500

	MAIL ADDRESS:	
		STREET 1:		2401 PLEASANT VALLEY ROAD
		CITY:			YORK
		STATE:			PA
		ZIP:			17402

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BMP/Graham Holdings Corp
		DATE OF NAME CHANGE:	20091204
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-12-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001478085</issuerCik>
        <issuerName>Graham Packaging Co Inc.</issuerName>
        <issuerTradingSymbol>GRM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001483061</rptOwnerCik>
            <rptOwnerName>Graham Donald C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1420 SIXTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>YORK</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>17403</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>29715</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>12.8528</value>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>585650</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Notes 1, 2, 3, and 4.</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>14535</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>12.9142</value>
                    <footnoteId id="F6"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>571115</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Notes 1, 2, 3, and 4.</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>9000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>13.1122</value>
                    <footnoteId id="F7"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>562115</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Notes 1, 2, 3, and 4.</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Donald C. Graham (&quot;Mr. Graham&quot;) is the sole member of Graham Capital Company (&quot;GCC&quot;), and he is the majority shareholder of Graham Engineering Corporation (&quot;GEC&quot;).</footnote>
        <footnote id="F2">On December 14, 2010, GEC sold 29,715 shares of common stock of the issuer (&quot;Shares&quot;) for $12.8528 per Share on the open market.  On December 15, 2010, GEC sold 14,535 Shares for $12.9142 per Share on the open market.  On December 16, 2010, GEC sold 9,000 Shares for $13.1122 per Share on the open market.</footnote>
        <footnote id="F3">At the conclusion of the December 14, 15, and 16, 2010 transactions, Mr. Graham was the beneficial owner of 562,115 Shares, 452,940 of which were directly owned by GCC, and 109,175 of which were directly owned by GEC.</footnote>
        <footnote id="F4">The reported securities are directly owned by GCC and GEC. Mr. Graham disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interests therein.</footnote>
        <footnote id="F5">The price in column 4 is a weighted average. The prices actually received on sales made on December 14, 2010, ranged from $12.85 to $12.93. For all transactions reported in this Form 4 utilizing a weighted average price, the reporting person undertakes to provide upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each seperate price within the range.</footnote>
        <footnote id="F6">The price in column 4 is a weighted average. The prices actually received on sales made on December 15, 2010, ranged from $12.90 to $12.99. For all transactions reported in this Form 4 utilizing a weighted average price, the reporting person undertakes to provide upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each seperate price within the range.</footnote>
        <footnote id="F7">The price in column 4 is a weighted average. The prices actually received on sales made on December 16, 2010, ranged from $13.00 to $13.29. For all transactions reported in this Form 4 utilizing a weighted average price, the reporting person undertakes to provide upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each seperate price within the range.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Paul L. Rudy III, Attorney-in-Fact of Donald C. Graham</signatureName>
        <signatureDate>2010-12-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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