<SUBMISSION>
<ACCESSION-NUMBER>0001181431-11-027587
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20110503
<FILING-DATE>20110505
<DATE-OF-FILING-DATE-CHANGE>20110505
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>MITSUI & CO USA INC
<CIK>0001283674
<STATE-OF-INCORPORATION>NY
<FISCAL-YEAR-END>0331
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-35155
<FILM-NUMBER>11816340
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>200 PARK AVE
<STREET2>STE 600
<CITY>NEW YORK
<STATE>NY
<ZIP>10166-0130
</MAIL-ADDRESS>
<FORMER-NAME>
<FORMER-CONFORMED-NAME>MITUSI CO USA INC
<DATE-CHANGED>20040315
</FORMER-NAME>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>BOINGO WIRELESS INC
<CIK>0001169988
<ASSIGNED-SIC>4899
<IRS-NUMBER>000000000
<STATE-OF-INCORPORATION>DE
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>10960 WILSHIRE BLVD., SUITE 800
<CITY>LOS ANGELES
<STATE>CA
<ZIP>90024
<PHONE>310-586-5180
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>10960 WILSHIRE BLVD., SUITE 800
<CITY>LOS ANGELES
<STATE>CA
<ZIP>90024
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>MCVP Holding, Inc.
<CIK>0001457994
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0331
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-35155
<FILM-NUMBER>11816339
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>200 PARK AVE., 36TH FL
<CITY>NEW YORK
<STATE>NY
<ZIP>10166
<PHONE>212-878-4066
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>200 PARK AVE., 36TH FL
<CITY>NEW YORK
<STATE>NY
<ZIP>10166
</MAIL-ADDRESS>
</REPORTING-OWNER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Mitsui & Co. Global Investment, Inc.
<CIK>0001519520
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-35155
<FILM-NUMBER>11816337
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>200 PARK AVE.
<CITY>NEW YORK
<STATE>NY
<ZIP>10166
<PHONE>858-436-8000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>200 PARK AVE.
<CITY>NEW YORK
<STATE>NY
<ZIP>10166
</MAIL-ADDRESS>
</REPORTING-OWNER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Corporate Development Fund of Mitsui & Co., Ltd.
<CIK>0001519555
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-35155
<FILM-NUMBER>11816338
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>200 PARK AVE.
<CITY>NEW YORK
<STATE>NY
<ZIP>10166
<PHONE>858-436-8000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>200 PARK AVE.
<CITY>NEW YORK
<STATE>NY
<ZIP>10166
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd310472.xml
<DESCRIPTION>FORM 4 - MITSUI & CO. (USA), INC.
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-05-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001169988</issuerCik>
        <issuerName>BOINGO WIRELESS INC</issuerName>
        <issuerTradingSymbol>WIFI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001283674</rptOwnerCik>
            <rptOwnerName>MITSUI &amp; CO USA INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 PARK AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10166</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001457994</rptOwnerCik>
            <rptOwnerName>MCVP Holding, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BOINGO WIRELESS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>10960 WILSHIRE BLVD. SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90024</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001519555</rptOwnerCik>
            <rptOwnerName>Corporate Development Fund of Mitsui &amp; Co., Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BOINGO WIRELESS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>10960 WILSHIRE BLVD. SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90024</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001519520</rptOwnerCik>
            <rptOwnerName>Mitsui &amp; Co. Global Investment, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BOINGO WIRELESS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>10960 WILSHIRE BLVD. SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90024</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-05-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>651535</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>13.50</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>175543</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>MCVP Holding, Inc.</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3348076</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2520998</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Corporate Development Fund of Mitsui &amp; Co. Ltd</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Comnmon Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16707</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Mitsui &amp; Co. Global Investment, Inc.</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The reported securities are owned directly by MCVP Holding, Inc.  Mitsui &amp; Co. (USA), Inc., Corporate Development Fund of Mitsui &amp; Co. Ltd and Mitsui &amp; Co. Global Investment, Inc. may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.</footnote>
        <footnote id="F2">The reported securities are owned directly by Mitsui &amp; Co. (USA), Inc. MCVP Holding, Inc., Corporate Development Fund of Mitsui &amp; Co. Ltd and Mitsui &amp; Co. Global Investment, Inc. may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.</footnote>
        <footnote id="F3">The reported securities are owned directly by Corporate Development Fund of Mitsui &amp; Co. Ltd. MCVP Holding, Inc., Mitsui &amp; Co. (USA), Inc. and Mitsui &amp; Co. Global Investment, Inc. may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.</footnote>
        <footnote id="F4">The reported securities are owned directly by Mitsui &amp; Co. Global Development, Inc. MCVP Holding, Inc., Mitsui &amp; Co. (USA), Inc. and Corporate Development Fund of Mitsui &amp; Co. Ltd. may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Peter Hovenier as Attorney-in-fact for Mitsui &amp; Co. (USA), Inc.</signatureName>
        <signatureDate>2011-05-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Peter Hovenier as Attorney-in-fact for MCVP Holding, Inc.</signatureName>
        <signatureDate>2011-05-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Peter Hovenier as Attorney-in-fact for Corporate Development Fund of Mitsui &amp; Co., Ltd.</signatureName>
        <signatureDate>2011-05-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Peter Hovenier as Attorney-in-fact for Mitsui &amp; Co. Global Investment, Inc.</signatureName>
        <signatureDate>2011-05-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
