<SEC-DOCUMENT>0000824142-19-000071-index.html : 20190402
<SEC-HEADER>0000824142-19-000071.hdr.sgml : 20190402
<ACCEPTANCE-DATETIME>20190402102040
ACCESSION NUMBER:		0000824142-19-000071
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20190514
FILED AS OF DATE:		20190402
DATE AS OF CHANGE:		20190402
EFFECTIVENESS DATE:		20190402

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AAON INC
		CENTRAL INDEX KEY:			0000824142
		STANDARD INDUSTRIAL CLASSIFICATION:	AIR COND & WARM AIR HEATING EQUIP & COMM & INDL REFRIG EQUIP [3585]
		IRS NUMBER:				870448736
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18953
		FILM NUMBER:		19723167

	BUSINESS ADDRESS:	
		STREET 1:		2425 SOUTH YUKON
		CITY:			TULSA
		STATE:			OK
		ZIP:			74107
		BUSINESS PHONE:		9185832266

	MAIL ADDRESS:	
		STREET 1:		2425 SOUTH YUKON
		CITY:			TULSA
		STATE:			OK
		ZIP:			74107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DIAMOND HEAD RESOURCES INC
		DATE OF NAME CHANGE:	19900808
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>aaon2019proxy.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: aaon2019proxy.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>aaon_aaonlogoa02.jpg
<TEXT>
Document 2 - file: aaon_aaonlogoa02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>aaon_nhasignaturea02.jpg
<TEXT>
Document 3 - file: aaon_nhasignaturea02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>lukessignaturea02.jpg
<TEXT>
Document 4 - file: lukessignaturea02.jpg

</DOCUMENT>
</SEC-DOCUMENT>