<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2011-03-07</periodOfReport>

    <dateOfOriginalSubmission>2011-03-09</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000766561</issuerCik>
        <issuerName>HICKORY TECH CORP</issuerName>
        <issuerTradingSymbol>HTCO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001240949</rptOwnerCik>
            <rptOwnerName>NORDQUIST LANE C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>221 EAST HICKORY STREET</rptOwnerStreet1>
            <rptOwnerStreet2>PO BOX 3248</rptOwnerStreet2>
            <rptOwnerCity>MANKATO</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>56002-3241</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5974</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Rabbi Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Includes shares of stock that were credited to the officer's account under the Company's deferred compensation program in connection with the reinvestment of cash dividends paid on shares of common stock held in the Rabbi Trust through December 31, 2010.</footnote>
        <footnote id="F2">This amendment is being filed to correct the number of shares reported as indirectly owned by Mr. Nordquist which had been understated by 287 shares due to a clerical error.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ David A. Christensen, Attorney in Fact for Lane C. Nordquist</signatureName>
        <signatureDate>2011-04-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
