<?xml version="1.0"?><?xml-stylesheet type="text/xsl" href="../4_X02.xsl"?><ownershipDocument>    <schemaVersion>X0303</schemaVersion>    <documentType>4</documentType>    <periodOfReport>2010-03-04</periodOfReport>    <notSubjectToSection16>0</notSubjectToSection16>    <issuer>        <issuerCik>0001034054</issuerCik>        <issuerName>SBA COMMUNICATIONS CORP</issuerName>        <issuerTradingSymbol>SBAC</issuerTradingSymbol>    </issuer>    <reportingOwner>        <reportingOwnerId>            <rptOwnerCik>0001444362</rptOwnerCik>            <rptOwnerName>Lazarus Brian D</rptOwnerName>        </reportingOwnerId>        <reportingOwnerAddress>            <rptOwnerStreet1>C/O SBA COMMUNICATIONS CORPORATION</rptOwnerStreet1>            <rptOwnerStreet2>5900 BROKEN SOUND PARKWAY, NW</rptOwnerStreet2>            <rptOwnerCity>BOCA RATON</rptOwnerCity>            <rptOwnerState>FL</rptOwnerState>            <rptOwnerZipCode>33487</rptOwnerZipCode>            <rptOwnerStateDescription></rptOwnerStateDescription>        </reportingOwnerAddress>        <reportingOwnerRelationship>            <isDirector>0</isDirector>            <isOfficer>1</isOfficer>            <isTenPercentOwner>0</isTenPercentOwner>            <isOther>0</isOther>            <officerTitle>VP &amp; Chief Accounting Officer</officerTitle>        </reportingOwnerRelationship>    </reportingOwner>    <nonDerivativeTable>        <nonDerivativeTransaction>            <securityTitle>                <value>Class A Common Stock</value>            </securityTitle>            <transactionDate>                <value>2010-03-08</value>            </transactionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>M</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>            </transactionCoding>            <transactionAmounts>                <transactionShares>                    <value>7303</value>                </transactionShares>                <transactionPricePerShare>                    <value>19.68</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>A</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>7303</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </nonDerivativeTransaction>        <nonDerivativeTransaction>            <securityTitle>                <value>Class A Common Stock</value>            </securityTitle>            <transactionDate>                <value>2010-03-08</value>            </transactionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>S</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>            </transactionCoding>            <transactionAmounts>                <transactionShares>                    <value>7303</value>                </transactionShares>                <transactionPricePerShare>                    <value>35.81</value>                    <footnoteId id="F1"/>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>D</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>0</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </nonDerivativeTransaction>    </nonDerivativeTable>    <derivativeTable>        <derivativeHolding>            <securityTitle>                <value>Stock Options (Right to Buy)</value>            </securityTitle>            <conversionOrExercisePrice>                <value>26.2</value>            </conversionOrExercisePrice>            <exerciseDate>                <footnoteId id="F2"/>            </exerciseDate>            <expirationDate>                <value>2016-10-09</value>            </expirationDate>            <underlyingSecurity>                <underlyingSecurityTitle>                    <value>Class A Common Stock</value>                </underlyingSecurityTitle>                <underlyingSecurityShares>                    <value>3750</value>                </underlyingSecurityShares>            </underlyingSecurity>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>3750</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </derivativeHolding>        <derivativeHolding>            <securityTitle>                <value>Stock Options (Right to Buy)</value>            </securityTitle>            <conversionOrExercisePrice>                <value>28.54</value>            </conversionOrExercisePrice>            <exerciseDate>                <footnoteId id="F3"/>            </exerciseDate>            <expirationDate>                <value>2014-02-26</value>            </expirationDate>            <underlyingSecurity>                <underlyingSecurityTitle>                    <value>Class A Common Stock</value>                </underlyingSecurityTitle>                <underlyingSecurityShares>                    <value>13500</value>                </underlyingSecurityShares>            </underlyingSecurity>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>13500</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </derivativeHolding>        <derivativeHolding>            <securityTitle>                <value>Stock Options (Right to Buy)</value>            </securityTitle>            <conversionOrExercisePrice>                <value>32.39</value>            </conversionOrExercisePrice>            <exerciseDate>                <footnoteId id="F4"/>            </exerciseDate>            <expirationDate>                <value>2015-02-28</value>            </expirationDate>            <underlyingSecurity>                <underlyingSecurityTitle>                    <value>Class A Common Stock</value>                </underlyingSecurityTitle>                <underlyingSecurityShares>                    <value>16000</value>                </underlyingSecurityShares>            </underlyingSecurity>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>16000</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </derivativeHolding>        <derivativeHolding>            <securityTitle>                <value>Stock Options (Right to Buy)</value>            </securityTitle>            <conversionOrExercisePrice>                <value>31.09</value>            </conversionOrExercisePrice>            <exerciseDate>                <footnoteId id="F5"/>            </exerciseDate>            <expirationDate>                <value>2015-09-12</value>            </expirationDate>            <underlyingSecurity>                <underlyingSecurityTitle>                    <value>Class A Common Stock</value>                </underlyingSecurityTitle>                <underlyingSecurityShares>                    <value>10000</value>                </underlyingSecurityShares>            </underlyingSecurity>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>10000</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </derivativeHolding>        <derivativeTransaction>            <securityTitle>                <value>Stock Options (Right to Buy)</value>            </securityTitle>            <conversionOrExercisePrice>                <value>19.68</value>            </conversionOrExercisePrice>            <transactionDate>                <value>2010-03-08</value>            </transactionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>M</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>            </transactionCoding>            <transactionAmounts>                <transactionShares>                    <value>7303</value>                </transactionShares>                <transactionPricePerShare>                    <value>0</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>D</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <exerciseDate>                <footnoteId id="F6"/>            </exerciseDate>            <expirationDate>                <value>2016-03-05</value>            </expirationDate>            <underlyingSecurity>                <underlyingSecurityTitle>                    <value>Class A Common Stock</value>                </underlyingSecurityTitle>                <underlyingSecurityShares>                    <value>7303</value>                </underlyingSecurityShares>            </underlyingSecurity>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>21910</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </derivativeTransaction>        <derivativeTransaction>            <securityTitle>                <value>Stock Options (Right to Buy)</value>            </securityTitle>            <conversionOrExercisePrice>                <value>35.71</value>            </conversionOrExercisePrice>            <transactionDate>                <value>2010-03-04</value>            </transactionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>A</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>            </transactionCoding>            <transactionAmounts>                <transactionShares>                    <value>12626</value>                </transactionShares>                <transactionPricePerShare>                    <value>0</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>A</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <exerciseDate>                <footnoteId id="F7"/>            </exerciseDate>            <expirationDate>                <value>2017-03-04</value>            </expirationDate>            <underlyingSecurity>                <underlyingSecurityTitle>                    <value>Class A Common Stock</value>                </underlyingSecurityTitle>                <underlyingSecurityShares>                    <value>12626</value>                </underlyingSecurityShares>            </underlyingSecurity>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>12626</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </derivativeTransaction>        <derivativeTransaction>            <securityTitle>                <value>Restricted Stock Units</value>            </securityTitle>            <conversionOrExercisePrice>                <footnoteId id="F8"/>            </conversionOrExercisePrice>            <transactionDate>                <value>2010-03-04</value>            </transactionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>A</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>            </transactionCoding>            <transactionAmounts>                <transactionShares>                    <value>2881</value>                </transactionShares>                <transactionPricePerShare>                    <value>0</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>A</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <exerciseDate>                <footnoteId id="F9"/>            </exerciseDate>            <expirationDate>                <footnoteId id="F9"/>            </expirationDate>            <underlyingSecurity>                <underlyingSecurityTitle>                    <value>Class A Common Stock</value>                </underlyingSecurityTitle>                <underlyingSecurityShares>                    <value>2881</value>                </underlyingSecurityShares>            </underlyingSecurity>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>2881</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </derivativeTransaction>    </derivativeTable>    <footnotes>        <footnote id="F1">Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transactions ranged from $35.80 to $35.83 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.</footnote>        <footnote id="F2">These options vest in accordance with the following schedule: 1,250 vest on each of the first through fourth anniversaries of the grant date (October 9, 2006).</footnote>        <footnote id="F3">These options vest in accordance with the following schedule: 4,500 vest on each of the first through fourth anniversaries of the grant date (February 26, 2007).</footnote>        <footnote id="F4">These options vest in accordance with the following schedule: 4,000 vest on each of the first through fourth anniversaries of the grant date (February 28, 2008).</footnote>        <footnote id="F5">These options vest in accordance with the following schedule: 2,500 vest on each of the first through fourth anniversaries of the grant date (September 12, 2008).</footnote>        <footnote id="F6">These options vest in accordance with the following schedule: 7,303 vest on each of the first through the third anniversaries of the grant date and 7,304 vest on the fourth anniversary of the grant date (March 5, 2009).</footnote>        <footnote id="F7">These options vest in accordance with the following schedule: 3,156 vest on each of the first and the third anniversary of the grant date and 3,157 vest on each of the second and the fourth anniversary of the grant date (March 4, 2010).</footnote>        <footnote id="F8">Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock.</footnote>        <footnote id="F9">These restricted stock units vest in accordance with the following schedule: 720 vest on each of the first through the third anniversaries of the grant date and 721 vest on the fourth anniversary of the grant date (March 4, 2010).</footnote>    </footnotes>    <ownerSignature>        <signatureName>/s/ Brian D.  Lazarus</signatureName>        <signatureDate>2010-03-08</signatureDate>    </ownerSignature></ownershipDocument>