<SEC-DOCUMENT>0001209191-18-041726.txt : 20180705
<SEC-HEADER>0001209191-18-041726.hdr.sgml : 20180705
<ACCEPTANCE-DATETIME>20180705170311
ACCESSION NUMBER:		0001209191-18-041726
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180702
FILED AS OF DATE:		20180705
DATE AS OF CHANGE:		20180705

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Peach Richard
		CENTRAL INDEX KEY:			0001409658

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34146
		FILM NUMBER:		18941188

	MAIL ADDRESS:	
		STREET 1:		299 SW CLAY STREET
		STREET 2:		SUITE 350
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97201

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Clearwater Paper Corp
		CENTRAL INDEX KEY:			0001441236
		STANDARD INDUSTRIAL CLASSIFICATION:	PAPERBOARD MILLS [2631]
		IRS NUMBER:				203594554
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		601 WEST RIVERSIDE AVENUE
		STREET 2:		SUITE 1100
		CITY:			SPOKANE
		STATE:			WA
		ZIP:			99201
		BUSINESS PHONE:		509.344.5900

	MAIL ADDRESS:	
		STREET 1:		601 WEST RIVERSIDE AVENUE
		STREET 2:		SUITE 1100
		CITY:			SPOKANE
		STATE:			WA
		ZIP:			99201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Potlatch Forest Products CORP
		DATE OF NAME CHANGE:	20080728
</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>2018-07-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001441236</issuerCik>
        <issuerName>Clearwater Paper Corp</issuerName>
        <issuerTradingSymbol>CLW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001409658</rptOwnerCik>
            <rptOwnerName>Peach Richard</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 WEST RIVERSIDE AVE.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1100</rptOwnerStreet2>
            <rptOwnerCity>SPOKANE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>99201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock Units</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>23.35</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-07-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>910.064</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>23.35</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2021-01-01</value>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2021-01-01</value>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>910.064</value>
                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1480.534</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Phantom stock units are credited to the reporting person's account on the transaction date in accordance with the provisions of the Clearwater Paper Corporation Deferred Compensation Plan for Directors and will be converted to cash and paid on a 1-for-1 basis with the issuer's common stock.</footnote>
        <footnote id="F2">Phantom Stock units will be converted to cash and paid on the date previously elected by the reporting person in accordance with the provisions of the Clearwater Paper Corporation Deferred Compensation Plan for Directors.</footnote>
        <footnote id="F3">Phantom stock unit beneficial ownership represents phantom stock allocated to the reporting person's Deferred Compensation Account since the reporting person's last report.  These phantom stock allocations represent quarterly retainer meeting fees and meeting attendance fees.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Michael S. Gadd, Attorney-in-Fact</signatureName>
        <signatureDate>2018-07-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
