<SEC-DOCUMENT>0001209191-14-075462.txt : 20141215
<SEC-HEADER>0001209191-14-075462.hdr.sgml : 20141215
<ACCEPTANCE-DATETIME>20141215173034
ACCESSION NUMBER:		0001209191-14-075462
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20141208
FILED AS OF DATE:		20141215
DATE AS OF CHANGE:		20141215

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FARMER BROTHERS CO
		CENTRAL INDEX KEY:			0000034563
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS FOOD PREPARATIONS & KINDRED PRODUCTS [2090]
		IRS NUMBER:				950725980
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		20333 S NORMANDIE AVE
		CITY:			TORRANCE
		STATE:			CA
		ZIP:			90502
		BUSINESS PHONE:		3107875200

	MAIL ADDRESS:	
		STREET 1:		20333 SOUTH NORMANDIE AVENUE
		CITY:			TORRANCE
		STATE:			CA
		ZIP:			90502

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MORTENSEN THOMAS W
		CENTRAL INDEX KEY:			0001546236

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34249
		FILM NUMBER:		141287732

	MAIL ADDRESS:	
		STREET 1:		20333 S. NORMANDIE AVE
		CITY:			TORRANCE
		STATE:			CA
		ZIP:			90502
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc4a.xml
<DESCRIPTION>FORM 4/A SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2014-12-08</periodOfReport>

    <dateOfOriginalSubmission>2014-12-11</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000034563</issuerCik>
        <issuerName>FARMER BROTHERS CO</issuerName>
        <issuerTradingSymbol>FARM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001546236</rptOwnerCik>
            <rptOwnerName>MORTENSEN THOMAS W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>FARMER BROS. CO.,</rptOwnerStreet1>
            <rptOwnerStreet2>20333 S NORMANDIE AVE</rptOwnerStreet2>
            <rptOwnerCity>TORRANCE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90502</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SR VP Route Sales</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $1.00 Par Value</value>
            </securityTitle>
            <transactionDate>
                <value>2014-12-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>337</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>27.07</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22649</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Due to a clerical error, the reporting person is filing this amendment to the Form 4 originally filed on December 11, 2014 (this &quot;Amendment&quot;) to correct the number of shares relinquished by the reporting person and cancelled by the issuer to satisfy tax withholding obligations of the reporting person on the vesting of restricted stock from 377 to 337.</footnote>
        <footnote id="F2">Due to a clerical error, the reporting person is filing this Amendment to correct the amount of securities beneficially owned following the reported transaction from 22,609 to 22,649.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Thomas J. Mattei, Jr. Attorney-In-fact for Thomas W. Mortensen</signatureName>
        <signatureDate>2014-12-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
