    <SEC-DOCUMENT>0001144204-17-015373-index.html : 20170317
    <SEC-HEADER>0001144204-17-015373.hdr.sgml : 20170317
    <ACCEPTANCE-DATETIME>20170317161548
    ACCESSION NUMBER:		0001144204-17-015373
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		6
    CONFORMED PERIOD OF REPORT:	20170504
    FILED AS OF DATE:		20170317
    DATE AS OF CHANGE:		20170317
    EFFECTIVENESS DATE:		20170317

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CLEARSIGN COMBUSTION CORP
    		CENTRAL INDEX KEY:			0001434524
    		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			WA

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35521
    		FILM NUMBER:		17698156

    	BUSINESS ADDRESS:
    		STREET 1:		12870 INTERURBAN AVENUE SOUTH
    		CITY:			SEATTLE
    		STATE:			WA
    		ZIP:			98168
    		BUSINESS PHONE:		(206) 673-4848

    	MAIL ADDRESS:
    		STREET 1:		12870 INTERURBAN AVENUE SOUTH
    		CITY:			SEATTLE
    		STATE:			WA
    		ZIP:			98168
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>v461962_def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: v461962_def14a.htm

    </DOCUMENT>
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    <TYPE>GRAPHIC
    <SEQUENCE>2
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: line.gif

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>logo_clearsign.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: logo_clearsign.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>spacer.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: spacer.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>v461962_proxy-1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: v461962_proxy-1.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>v461962_proxy-2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: v461962_proxy-2.jpg

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    </SEC-DOCUMENT>