    <SEC-DOCUMENT>0001441683-22-000041-index.html : 20220426
    <SEC-HEADER>0001441683-22-000041.hdr.sgml : 20220426
    <ACCEPTANCE-DATETIME>20220425192653
    ACCESSION NUMBER:		0001441683-22-000041
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20220426
    DATE AS OF CHANGE:		20220425

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			APPIAN CORP
    		CENTRAL INDEX KEY:			0001441683
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
    		IRS NUMBER:				541956084
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38098
    		FILM NUMBER:		22851213

    	BUSINESS ADDRESS:
    		STREET 1:		7950 JONES BRANCH DRIVE
    		CITY:			TYSONS
    		STATE:			VA
    		ZIP:			22102
    		BUSINESS PHONE:		703-442-8844

    	MAIL ADDRESS:
    		STREET 1:		7950 JONES BRANCH DRIVE
    		CITY:			TYSONS
    		STATE:			VA
    		ZIP:			22102
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>proxynotice-2022.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: proxynotice-2022.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>appiancorporation_autoxvsm.jpg
    <TEXT>
    Document 2 - file: appiancorporation_autoxvsm.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>appiancorporation_autoxvsma.jpg
    <TEXT>
    Document 3 - file: appiancorporation_autoxvsma.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>