<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
    <schemaVersion>X0202</schemaVersion>
<headerData>
        <submissionType>SCHEDULE 13G</submissionType>
        <previousAccessionNumber/>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001539041</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <coverPageHeader>
            <securitiesClassTitle>Class A</securitiesClassTitle>
            <eventDateRequiresFilingThisStatement>09/30/2026</eventDateRequiresFilingThisStatement>
            <issuerInfo>
                <issuerCik>0002050501</issuerCik>
                <issuerName>Blue Water Acquisition Corp. III</issuerName>
                <issuerCusips>
                    <issuerCusipNumber>G1368E106</issuerCusipNumber>
                </issuerCusips>
                <issuerPrincipalExecutiveOfficeAddress>
                    <com:street1>15 E. Putnam Avenue</com:street1>
                    <com:street2>Suite 363</com:street2>
                    <com:city>Greenwich</com:city>
                    <com:stateOrCountry>CT</com:stateOrCountry>
                    <com:zipCode>06830</com:zipCode>
                </issuerPrincipalExecutiveOfficeAddress>
            </issuerInfo>
            <designateRulesPursuantThisScheduleFiled>
                <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
            </designateRulesPursuantThisScheduleFiled>
        </coverPageHeader>
        <coverPageHeaderReportingPersonDetails>

            <reportingPersonName> Picton Mahoney Asset Management</reportingPersonName>
            <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
            <reportingPersonBeneficiallyOwnedNumberOfShares>
                <soleVotingPower>1400000</soleVotingPower>
                <sharedVotingPower>0</sharedVotingPower>
                <soleDispositivePower>1400000</soleDispositivePower>
                <sharedDispositivePower>0</sharedDispositivePower>
            </reportingPersonBeneficiallyOwnedNumberOfShares>
            <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1400000</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
            <classPercent>5.39</classPercent>
            <typeOfReportingPerson>PN</typeOfReportingPerson>
        </coverPageHeaderReportingPersonDetails>
        <items>
            <item1>
                <issuerName>Blue Water Acquisition Corp. III</issuerName>
                <issuerPrincipalExecutiveOfficeAddress>15 E. Putnam Avenue, Suite 363, Greenwich, CONNECTICUT, 06830</issuerPrincipalExecutiveOfficeAddress>
            </item1>
            <item2>
                <filingPersonName>Picton Mahoney Asset Management</filingPersonName>
                <principalBusinessOfficeOrResidenceAddress>33 Yonge Street #320</principalBusinessOfficeOrResidenceAddress>
                <citizenship>CANADA</citizenship>
            </item2>
            <item3>
                <notApplicableFlag>N</notApplicableFlag>
                <typeOfPersonFiling>FI</typeOfPersonFiling>
                <otherTypeOfPersonFiling>Investment Fund Manager</otherTypeOfPersonFiling>
            </item3>
            <item4>
                <amountBeneficiallyOwned>1400000</amountBeneficiallyOwned>
                <classPercent>5.39</classPercent>
                <numberOfSharesPersonHas>
                    <solePowerOrDirectToVote>1400000</solePowerOrDirectToVote>
                    <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
                    <solePowerOrDirectToDispose>1400000</solePowerOrDirectToDispose>
                    <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
                </numberOfSharesPersonHas>
            </item4>
            <item5>
                <notApplicableFlag>Y</notApplicableFlag>
                <classOwnership5PercentOrLess>N</classOwnership5PercentOrLess>
            </item5>
            <item6>
                <notApplicableFlag>Y</notApplicableFlag>
            </item6>
            <item7>
                <notApplicableFlag>Y</notApplicableFlag>
            </item7>
            <item8>
                <notApplicableFlag>Y</notApplicableFlag>
            </item8>
            <item9>
                <notApplicableFlag>Y</notApplicableFlag>
            </item9>
            <item10>
                <notApplicableFlag>N</notApplicableFlag>
                <certifications>By signing below I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to Investment Fund Manager is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s). I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D.</certifications>
            </item10>
        </items>
        <signatureInformation>
            <reportingPersonName>Picton Mahoney Asset Management</reportingPersonName>
            <signatureDetails>
                <signature>Ahsan Ahmed</signature>
                <title>Chief Compliance Officer</title>
                <date>10/20/2026</date>
            </signatureDetails>
        </signatureInformation>
        <signatureComments>After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.</signatureComments>
    </formData>
</edgarSubmission>
