<SEC-DOCUMENT>0002074510-25-000001.txt : 20251204
<SEC-HEADER>0002074510-25-000001.hdr.sgml : 20251204
<ACCEPTANCE-DATETIME>20251204184314
ACCESSION NUMBER:		0002074510-25-000001
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251125
FILED AS OF DATE:		20251204
DATE AS OF CHANGE:		20251204

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			McGurn Kevin
		CENTRAL INDEX KEY:			0002074510
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-42692
		FILM NUMBER:		251550902

	MAIL ADDRESS:	
		STREET 1:		1012 SPRINGFIELD AVENUE
		CITY:			MOUNTAINSIDE
		STATE:			NJ
		ZIP:			07092

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Blue Water Acquisition Corp. III
		CENTRAL INDEX KEY:			0002050501
		STANDARD INDUSTRIAL CLASSIFICATION:	BLANK CHECKS [6770]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				000000000
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		15 E. PUTNUM AVENUE
		STREET 2:		SUITE 363
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		646-303-0737

	MAIL ADDRESS:	
		STREET 1:		15 E. PUTNUM AVENUE
		STREET 2:		SUITE 363
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2025-11-25</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0002050501</issuerCik>
        <issuerName>Blue Water Acquisition Corp. III</issuerName>
        <issuerTradingSymbol>BLUW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002074510</rptOwnerCik>
            <rptOwnerName>McGurn Kevin</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BLUE WATER ACQUISITION CORP. III</rptOwnerStreet1>
            <rptOwnerStreet2>1012 SPRINGFIELD AVENUE</rptOwnerStreet2>
            <rptOwnerCity>MOUNTAINSIDE</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07092</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/ Kevin McGurn</signatureName>
        <signatureDate>2025-12-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
