<SUBMISSION>
<ACCESSION-NUMBER>0001181431-06-028750
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20060504
<FILING-DATE>20060508
<DATE-OF-FILING-DATE-CHANGE>20060508
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CROWN CASTLE INTERNATIONAL CORP
<CIK>0001051470
<ASSIGNED-SIC>4899
<IRS-NUMBER>760470458
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>510 BERING DRIVE
<STREET2>SUITE 500
<CITY>HOUSTON
<STATE>TX
<ZIP>77057
<PHONE>7135703000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>510 BERING DRIVE
<STREET2>SUITE 500
<CITY>HOUSTON
<STATE>TX
<ZIP>77057
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>HACK RANDALL
<CIK>0001071788
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-16441
<FILM-NUMBER>06817888
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>7135703070
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>CROWN CASTLE INTERNATIONAL CORP
<STREET2>510 BERING DR STE 500
<CITY>HOUSTON
<STATE>TX
<ZIP>77057
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd116635.xml
<DESCRIPTION>CHARITABLE GIFT 050406
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-05-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001051470</issuerCik>
        <issuerName>CROWN CASTLE INTERNATIONAL CORP</issuerName>
        <issuerTradingSymbol>CCI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001071788</rptOwnerCik>
            <rptOwnerName>HACK RANDALL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>510 BERING DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 600</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77057</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock $0.01 Par Value</value>
            </securityTitle>
            <transactionDate>
                <value>2006-05-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1030</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>30738</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock $0.01 Par Value</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>139925</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By The Hack LLC</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents a gift of such shares to charities pursuant to Rule 16b-5.</footnote>
        <footnote id="F2">The Hack LLC (also refered to as Hack LLC) is a family investment vehicle of which Mr. Hack's spouse has sole voting and dispositive power. Mr. Hack disclaims beneficial ownership of any shares held by Hack LLC in which he does not have a pecuniary interest.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Randall A. Hack</signatureName>
        <signatureDate>2006-05-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
