<SEC-DOCUMENT>0001209191-15-085096.txt : 20151214
<SEC-HEADER>0001209191-15-085096.hdr.sgml : 20151214
<ACCEPTANCE-DATETIME>20151214172704
ACCESSION NUMBER:		0001209191-15-085096
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20151207
FILED AS OF DATE:		20151214
DATE AS OF CHANGE:		20151214

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:		13601 NORTH FREEWAY, SUITE 200
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76177
		BUSINESS PHONE:		682 549 6600

	MAIL ADDRESS:	
		STREET 1:		13601 NORTH FREEWAY SUITE 200
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76177

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KEOWN MICHAEL H
		CENTRAL INDEX KEY:			0001259767

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34249
		FILM NUMBER:		151286804

	MAIL ADDRESS:	
		STREET 1:		20333 S. NORMANDIE AVE.
		CITY:			TORRANCE
		STATE:			CA
		ZIP:			90502
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-12-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001259767</rptOwnerCik>
            <rptOwnerName>KEOWN MICHAEL H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>FARMER BROS. CO.</rptOwnerStreet1>
            <rptOwnerStreet2>13601 NORTH FREEWAY, SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>FORT WORTH</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>76177</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President, CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $1.00 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2015-12-07</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4206</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>30.72</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>46698</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This Form 4 is being filed late due to an inadvertent administrative error.</footnote>
        <footnote id="F2">Exempt transaction pursuant to Rule 16b-3(e) - payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. All of the shares reported as disposed of in this Form 4 were relinquished by the reporting person and cancelled by the issuer in exchange for the issuer's
agreement to pay federal and state tax withholding obligations of the reporting person resulting from the vesting on December 7, 2015 of restricted stock granted on December 7, 2012. The reporting person did not sell or otherwise dispose of any of the shares reported on this Form 4 for any reason other than to cover required taxes. The price shown in Box 4 is the closing price of
the Company's Common Stock on the vesting date (December 7, 2015).</footnote>
        <footnote id="F3">Includes a total of 1,626 shares (including 523 shares in fiscal 2015) allocated as of the reporting date to the reporting person pursuant to the Farmer Bros. Co. Employee Stock Ownership Plan.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Thomas J. Mattei, Jr., Attorney-In-Fact for Michael H. Keown</signatureName>
        <signatureDate>2015-12-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
