-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 UHuil8jOHG9e2/5D5F+5VvsmKbJgJaXoJT8u7Jx4clV65B90EmV/Hp+qIQM+ubeE
 q7qyg5FiCcIWML5cZpN9ag==

<SEC-DOCUMENT>0001337324-05-000001.txt : 20050912
<SEC-HEADER>0001337324-05-000001.hdr.sgml : 20050912
<ACCEPTANCE-DATETIME>20050912134414
ACCESSION NUMBER:		0001337324-05-000001
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050912
FILED AS OF DATE:		20050912
DATE AS OF CHANGE:		20050912

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MERCER INTERNATIONAL INC
		CENTRAL INDEX KEY:			0000075659
		STANDARD INDUSTRIAL CLASSIFICATION:	PAPER MILLS [2621]
		IRS NUMBER:				916087550
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		14900 INTERURBAN AVENUE SOUTH
		STREET 2:		SUITE 282
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168
		BUSINESS PHONE:		2066744639

	MAIL ADDRESS:	
		STREET 1:		14900 INTERURBAN AVENUE SOUTH
		STREET 2:		SUITE 282
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ASIAMERICA EQUITIES LTD
		DATE OF NAME CHANGE:	19920109

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PACIFIC WEST REALTY TRUST
		DATE OF NAME CHANGE:	19860219

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ridder Wolfram
		CENTRAL INDEX KEY:			0001337324

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09409
		FILM NUMBER:		051079528

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		49-0-9280-8451

	MAIL ADDRESS:	
		STREET 1:		AM EISENBUHL 7
		CITY:			SELBITZ
		STATE:			2M
		ZIP:			D-95152
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2005-09-12</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000075659</issuerCik>
        <issuerName>MERCER INTERNATIONAL INC</issuerName>
        <issuerTradingSymbol>MERCS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001337324</rptOwnerCik>
            <rptOwnerName>Ridder Wolfram</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>AM EISENBUHL 7</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SELBITZ</rptOwnerCity>
            <rptOwnerState>2M</rptOwnerState>
            <rptOwnerZipCode>D-95152</rptOwnerZipCode>
            <rptOwnerStateDescription>GERMANY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP, Business Development</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.375</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2000-01-19</value>
            </exerciseDate>
            <expirationDate>
                <value>2010-01-20</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>60000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <ownerSignature>
        <signatureName>/s/ Wolfram Ridder</signatureName>
        <signatureDate>2005-09-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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