<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001466616</cik>
        <entityName>NorthStar Income Opportunity REIT I, Inc.</entityName>
        <issuerAddress>
            <street1>399 PARK AVENUE, 18TH FLOOR</street1>
            <city>NEW YORK</city>
            <stateOrCountry>NY</stateOrCountry>
            <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
            <zipCode>10022</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>212-547-2600</issuerPhoneNumber>
        <jurisdictionOfInc>MARYLAND</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2009</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <middleName>T.</middleName>
                <lastName>Hamamoto</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>399 Park Avenue</street1>
                <street2>18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chairman of the Board and Chief Executive Officer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Daniel</firstName>
                <middleName>R.</middleName>
                <lastName>Gilbert</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>399 Park Avenue</street1>
                <street2>18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Investment Officer, Executive Vice President and Director</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Andrew</firstName>
                <middleName>C.</middleName>
                <lastName>Richardson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>399 Park Avenue</street1>
                <street2>18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>President, Chief Financial Officer, Treasurer and Director</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Albert</firstName>
                <lastName>Tylis</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>399 Park Avenue</street1>
                <street2>18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Operating Officer, General Counsel, Secretary and Director</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>REITS and Finance</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>No Revenues</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001466616-10-000004</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-09-24</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>100000</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Berthel Fisher &amp; Co.</recipientName>
                <recipientCRDNumber>13609</recipientCRDNumber>
                <associatedBDName>Jerry Dewayne McCutchen</associatedBDName>
                <associatedBDCRDNumber>1076678</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>524A Boulevard Park W</street1>
                    <city>Mobile</city>
                    <stateOrCountry>AL</stateOrCountry>
                    <stateOrCountryDescription>ALABAMA</stateOrCountryDescription>
                    <zipCode>36609</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Advisory Group Equity Services</recipientName>
                <recipientCRDNumber>15427</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>161 Ash Street</street1>
                    <street2>Suite D</street2>
                    <city>Reading</city>
                    <stateOrCountry>MA</stateOrCountry>
                    <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                    <zipCode>01867</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Moors &amp; Cabot Investments</recipientName>
                <recipientCRDNumber>594</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>111 Devonshire Street</street1>
                    <city>Boston</city>
                    <stateOrCountry>MA</stateOrCountry>
                    <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                    <zipCode>02825</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Primex</recipientName>
                <recipientCRDNumber>29394</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>33 Front Street</street1>
                    <street2>Suite 304</street2>
                    <city>Hempsted</city>
                    <stateOrCountry>NY</stateOrCountry>
                    <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                    <zipCode>11550</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>SII Investments. Inc.</recipientName>
                <recipientCRDNumber>2225</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>5555 Grande Market Drive</street1>
                    <city>Appleton</city>
                    <stateOrCountry>WI</stateOrCountry>
                    <stateOrCountryDescription>WISCONSIN</stateOrCountryDescription>
                    <zipCode>54913</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Investment Centers of America</recipientName>
                <recipientCRDNumber>16443</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>212 N 4th Street</street1>
                    <city>Bismarck</city>
                    <stateOrCountry>ND</stateOrCountry>
                    <stateOrCountryDescription>NORTH DAKOTA</stateOrCountryDescription>
                    <zipCode>58501</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>National Planning Corporation</recipientName>
                <recipientCRDNumber>29604</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>401 Wilshire Blvd.</street1>
                    <street2>Suite 1100</street2>
                    <city>Santa Monica</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                    <zipCode>90401</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Invest Financial Corporation</recipientName>
                <recipientCRDNumber>12984</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>8745 Henderson Road</street1>
                    <street2>Suite 300</street2>
                    <city>Tampa</city>
                    <stateOrCountry>FL</stateOrCountry>
                    <stateOrCountryDescription>FLORIDA</stateOrCountryDescription>
                    <zipCode>33634</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Cape Securities Inc.</recipientName>
                <recipientCRDNumber>7072</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>2005 Pennsylvania Avenue</street1>
                    <city>McDonough</city>
                    <stateOrCountry>GA</stateOrCountry>
                    <stateOrCountryDescription>GEORGIA</stateOrCountryDescription>
                    <zipCode>30253</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Girard Securities Inc.</recipientName>
                <recipientCRDNumber>18697</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>9560 Waples Street</street1>
                    <street2>Suite B</street2>
                    <city>San Diego</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                    <zipCode>92121</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Centaurus Financial Inc.</recipientName>
                <recipientCRDNumber>30833</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>2300 E. Katella Avenue</street1>
                    <street2>Suite 200</street2>
                    <city>Anaheim</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                    <zipCode>92806</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Rice Pontes Capitial, Inc.</recipientName>
                <recipientCRDNumber>40056</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>2001 Crow Canyon Road</street1>
                    <street2>Suite 150</street2>
                    <city>San Ramon</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                    <zipCode>94583</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>CA</state>
                    <description>CALIFORNIA</description>
                    <state>CO</state>
                    <description>COLORADO</description>
                    <state>OR</state>
                    <description>OREGON</description>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>PrimeVest Financial Services, Inc.</recipientName>
                <recipientCRDNumber>15340</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>200 N. Sepulveda Blvd.</street1>
                    <street2>Suite 1200</street2>
                    <city>El Segundo</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                    <zipCode>90245</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Multi-Financial Securities Corporation</recipientName>
                <recipientCRDNumber>10299</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>200 N. Sepulveda Blvd.</street1>
                    <street2>Suite 1200</street2>
                    <city>El Segundo</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                    <zipCode>990245</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>Financial Network Investment Corporation</recipientName>
                <recipientCRDNumber>13572</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>200 N. Sepulveda Blvd.</street1>
                    <street2>Suite 1200</street2>
                    <city>El Segundo</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                    <zipCode>90245</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>ING Financial Partners</recipientName>
                <recipientCRDNumber>2882</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>909 Locust Street</street1>
                    <street2>MS 250</street2>
                    <city>Des Moines</city>
                    <stateOrCountry>IA</stateOrCountry>
                    <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                    <zipCode>50309</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>100000000</totalOfferingAmount>
            <totalAmountSold>15642184</totalAmountSold>
            <totalRemaining>84357816</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>221</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>7000000</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse>Assuming maximum offering</clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>NorthStar Income Opportunity REIT I, Inc.</issuerName>
                <signatureName>Andrew C. Richardson</signatureName>
                <nameOfSigner>Andrew C. Richardson</nameOfSigner>
                <signatureTitle>Pres., CFO and Treasurer</signatureTitle>
                <signatureDate>2010-07-01</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
