<SEC-DOCUMENT>0000714562-20-000047.txt : 20200319
<SEC-HEADER>0000714562-20-000047.hdr.sgml : 20200319
<ACCEPTANCE-DATETIME>20200319154027
ACCESSION NUMBER:		0000714562-20-000047
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200319
FILED AS OF DATE:		20200319
DATE AS OF CHANGE:		20200319

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Maher Tina Jane
		CENTRAL INDEX KEY:			0001794826

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-16759
		FILM NUMBER:		20728322

	MAIL ADDRESS:	
		STREET 1:		2000 BOLTON ROAD
		CITY:			WEST TERRE HAUTE
		STATE:			IN
		ZIP:			47885

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST FINANCIAL CORP /IN/
		CENTRAL INDEX KEY:			0000714562
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				351546989
		STATE OF INCORPORATION:			IN
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE FIRST FINANCIAL PLAZA
		CITY:			TERRE HAUTE
		STATE:			IN
		ZIP:			47807
		BUSINESS PHONE:		(812) 238-6000

	MAIL ADDRESS:	
		STREET 1:		ONE FIRST FINANCIAL PLAZA
		CITY:			TERRE HAUTE
		STATE:			IN
		ZIP:			47807

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TERRE HAUTE FIRST CORP
		DATE OF NAME CHANGE:	19850808
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_158464680941313.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-03-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000714562</issuerCik>
        <issuerName>FIRST FINANCIAL CORP /IN/</issuerName>
        <issuerTradingSymbol>THFF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001794826</rptOwnerCik>
            <rptOwnerName>Maher Tina Jane</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2000 BOLTON ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WEST TERRE HAUTE</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>47885</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>First Financial Corp Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-03-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>29.07</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Rodger A. McHargue POA for Tina J Maher</signatureName>
        <signatureDate>2020-03-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
