<SEC-DOCUMENT>0000868611-18-000003-index.html : 20180104
<SEC-HEADER>0000868611-18-000003.hdr.sgml : 20180104
<ACCEPTANCE-DATETIME>20180104171222
ACCESSION NUMBER:		0000868611-18-000003
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20180104
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180104
DATE AS OF CHANGE:		20180104

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SONIC CORP
		CENTRAL INDEX KEY:			0000868611
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-EATING PLACES [5812]
		IRS NUMBER:				731371046
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0816

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18859
		FILM NUMBER:		18510981

	BUSINESS ADDRESS:	
		STREET 1:		300 JOHNNY BENCH DRIVE
		CITY:			OKLAHOMA CITY
		STATE:			OK
		ZIP:			73104
		BUSINESS PHONE:		4052255000

	MAIL ADDRESS:	
		STREET 1:		300 JOHNNY BENCH DRIVE
		CITY:			OKLAHOMA CITY
		STATE:			OK
		ZIP:			73104
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>fy2018q18k-earningsrelease.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: fy2018q18k-earningsrelease.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>fy2018q1-earningsrelease.htm
<DESCRIPTION>EXHIBIT 99
<TEXT>
Document 2 - file: fy2018q1-earningsrelease.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>sonc-20161024xex99g001a09.jpg
<TEXT>
Document 3 - file: sonc-20161024xex99g001a09.jpg

</DOCUMENT>
</SEC-DOCUMENT>