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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,
 Aw4+gSl6prpC1COwKE+EpJCovHjg7RGJZyP0ZWPExNDKVKZAljadtQBX7dv4cwM8
 lCjWHg4sksBfhIY/WEdgzg==

<SEC-DOCUMENT>0001181431-08-034980.txt : 20080528
<SEC-HEADER>0001181431-08-034980.hdr.sgml : 20080528
<ACCEPTANCE-DATETIME>20080528172142
ACCESSION NUMBER:		0001181431-08-034980
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080527
FILED AS OF DATE:		20080528
DATE AS OF CHANGE:		20080528

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BANCTRUST FINANCIAL GROUP INC
		CENTRAL INDEX KEY:			0000783739
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				630909434
		STATE OF INCORPORATION:			AL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 ST JOSEPH ST
		STREET 2:		P O BOX 3067
		CITY:			MOBILE
		STATE:			AL
		ZIP:			36602
		BUSINESS PHONE:		2514317800

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SOUTH ALABAMA BANCORPORATION INC
		DATE OF NAME CHANGE:	20010411

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MOBILE NATIONAL CORP
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WALLACE DENNIS
		CENTRAL INDEX KEY:			0001190459

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-15423
		FILM NUMBER:		08864328

	MAIL ADDRESS:	
		STREET 1:		224 MATTIES WAY
		CITY:			DESTIN
		STATE:			FL
		ZIP:			32541
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd208733.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000783739</issuerCik>
        <issuerName>BANCTRUST FINANCIAL GROUP INC</issuerName>
        <issuerTradingSymbol>BTFG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001190459</rptOwnerCik>
            <rptOwnerName>WALLACE DENNIS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>244 MATTIES WAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DESTIN</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>32541</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock $.01 Par</value>
            </securityTitle>
            <transactionDate>
                <value>2008-05-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>38.08</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>10.50</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18978</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <remarks>Rabbi Trust</remarks>

    <ownerSignature>
        <signatureName>Dennis A Wallace by Leigh G Thompson POA</signatureName>
        <signatureDate>2008-05-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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