-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 FXI8visj0+O68boClULNIzT3ws8dY+sWg///MpHALXRyb3V9Q/BENnOAMHNPX0CW
 M/fvDgOhtEdHKlUwIPKXCQ==

<SEC-DOCUMENT>0001140361-03-002726.txt : 20030807
<SEC-HEADER>0001140361-03-002726.hdr.sgml : 20030807
<ACCEPTANCE-DATETIME>20030807180820
ACCESSION NUMBER:		0001140361-03-002726
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030806
FILED AS OF DATE:		20030807

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SMITH WYMAN G III
		CENTRAL INDEX KEY:			0001205881

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-31080
		FILM NUMBER:		03829666

	BUSINESS ADDRESS:	
		STREET 1:		1511 PARTRICK ROAD
		CITY:			NAPA
		STATE:			CA
		ZIP:			94558

	MAIL ADDRESS:	
		STREET 1:		1511 PARTRICK ROAD
		CITY:			NAPA
		STATE:			CA
		ZIP:			94558

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NORTH BAY BANCORP/CA
		CENTRAL INDEX KEY:			0001102595
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				680434802
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1500 SOSCOL AVE
		CITY:			NAPA
		STATE:			CA
		ZIP:			94559
		BUSINESS PHONE:		7072578500

	MAIL ADDRESS:	
		STREET 1:		1500 SOSCOL AVE
		CITY:			NAPA
		STATE:			CA
		ZIP:			94559
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
<periodOfReport>2003-08-06</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0001102595</issuerCik>
        <issuerName>NORTH BAY BANCORP/CA</issuerName>
        <issuerTradingSymbol>NBAN</issuerTradingSymbol>
</issuer>
<reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001205881</rptOwnerCik>
            <rptOwnerName>SMITH WYMAN G III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1000 MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NAPA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94559</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>1</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle>Corporate Secretary</officerTitle>
<otherText></otherText>
</reportingOwnerRelationship>
</reportingOwner>
<nonDerivativeTable>
<nonDerivativeTransaction>
<securityTitle>
<value>Common Stock</value>
</securityTitle>
<transactionDate>
<value>2003-08-06</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>S</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>500</value>
</transactionShares>
<transactionPricePerShare>
<value>27.50</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>24506</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value></value>
</natureOfOwnership>
</ownershipNature>
</nonDerivativeTransaction>
</nonDerivativeTable>
<remarks></remarks>
<ownerSignature>
<signatureName>Wyman G. Smith</signatureName>
<signatureDate>2003-08-07</signatureDate>
</ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----