    <SEC-DOCUMENT>0001144204-15-019637-index.html : 20150331
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    <ACCEPTANCE-DATETIME>20150331060124
    ACCESSION NUMBER:		0001144204-15-019637
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		6
    CONFORMED PERIOD OF REPORT:	20150507
    FILED AS OF DATE:		20150331
    DATE AS OF CHANGE:		20150331
    EFFECTIVENESS DATE:		20150331

    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:		15736320

    	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
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    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: v405313_def14a.htm

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    <TEXT>
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: v405313_proxycd02.jpg

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    <SEQUENCE>4
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    <DESCRIPTION>GRAPHIC
    <TEXT>
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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
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    <DESCRIPTION>GRAPHIC
    <TEXT>
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