-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 ANIN3Q9pfcHHxtsIDUSMiPHB1TqpSdiM+9jSuDSUY//17GiviRE7ISicqKQfbNWQ
 m309scKAi4kt33WaYEUJNA==

<SEC-DOCUMENT>0001179110-09-017142.txt : 20091217
<SEC-HEADER>0001179110-09-017142.hdr.sgml : 20091217
<ACCEPTANCE-DATETIME>20091217151704
ACCESSION NUMBER:		0001179110-09-017142
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20091216
FILED AS OF DATE:		20091217
DATE AS OF CHANGE:		20091217

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mulligan Donal L
		CENTRAL INDEX KEY:			0001406019

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16191
		FILM NUMBER:		091247089

	MAIL ADDRESS:	
		STREET 1:		ONE GENERAL MILLS BLVD
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55426

	FORMER NAME:	
		FORMER CONFORMED NAME:	Mulligan Donal
		DATE OF NAME CHANGE:	20070710

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TENNANT CO
		CENTRAL INDEX KEY:			0000097134
		STANDARD INDUSTRIAL CLASSIFICATION:	REFRIGERATION & SERVICE INDUSTRY MACHINERY [3580]
		IRS NUMBER:				410572550
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		701 N LILAC DR
		STREET 2:		PO BOX 1452
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55440
		BUSINESS PHONE:		6125401200

	MAIL ADDRESS:	
		STREET 1:		701 N LILAC DR
		STREET 2:		PO BOX 1452
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55440

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TENNANT G H CO
		DATE OF NAME CHANGE:	19700515
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2009-12-16</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000097134</issuerCik>
        <issuerName>TENNANT CO</issuerName>
        <issuerTradingSymbol>TNC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001406019</rptOwnerCik>
            <rptOwnerName>Mulligan Donal L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE GENERAL MILLS BLVD. WO5A-2</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GOLDEN VALLEY</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55426</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>No securities are beneficially owned.</remarks>

    <ownerSignature>
        <signatureName>/s/Timothy Phillips as Attorney-in-Fact</signatureName>
        <signatureDate>2009-12-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex24mulligan.txt
<DESCRIPTION>MULLIGAN POWER OF ATTORNEY
<TEXT>
POWER OF ATTORNEY

I, Donal L. Mulligan, hereby authorize and designate each of Heidi
M. Wilson, Kristin A. Stokes, Timothy P. Phillips, Amy C. Seidel,
Nicole Kroetsch, and Sharon Stuckmayer, signing singly, as my true
and lawful attorney-in-fact to:

(1) execute for and on my behalf, in my capacity as an officer
and/or director of Tennant Company (the "Company"), the Form ID
and Forms 3, 4 and 5 in accordance with Section 16(a) of the
Securities Exchange Act of 1934 (the "Exchange Act") and the rules
and regulations promulgated thereunder;

(2) do and perform any and all acts for and on my behalf which may
be necessary or desirable to complete and execute any such Form ID
and Form 3, 4 or 5 and timely file such form with the Securities
and Exchange Commission, any stock exchange or similar authority,
and the National Association of Securities Dealers; and

(3) take any other action of any type whatsoever in connection
with the foregoing which, in the opinion of such attorney-in-fact,
may be to my benefit, in my best interest, or legally required of
me, it being understood that the statements executed by such
attorney-in-fact on my behalf pursuant to this Power of Attorney
shall be in such form and shall contain such terms and conditions
as such attorney-in-fact may approve in such attorney-in-fact's
discretion.

I hereby further grant to each such attorney-in-fact full power
and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as fully
to all intents and purposes as I might or could do if personally
present, with full power of substitutes or revocation, hereby
ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or
cause to be done by virtue of this Power of Attorney and the
rights and powers herein granted.  I hereby acknowledge that the
foregoing attorneys-in-fact, in serving in such capacity at my
request, are not assuming, nor is the Company assuming, any of my
responsibilities to comply with Section 16 of the Exchange Act.

This Power of Attorney shall remain in full force and effect until
I am no longer required to file Forms 3, 4 and 5 with respect to
my holdings of and transactions in securities issued by the
Company, unless earlier revoked by me in a signed writing
delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, I have caused this Power of Attorney to be
duly executed as of this 19th day of August 2009.

Donal L. Mulligan
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
