    <SEC-DOCUMENT>0001170010-21-000106-index.html : 20210511
    <SEC-HEADER>0001170010-21-000106.hdr.sgml : 20210511
    <ACCEPTANCE-DATETIME>20210511171453
    ACCESSION NUMBER:		0001170010-21-000106
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20210511
    DATE AS OF CHANGE:		20210511

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CARMAX INC
    		CENTRAL INDEX KEY:			0001170010
    		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-AUTO DEALERS & GASOLINE STATIONS [5500]
    		IRS NUMBER:				541821055
    		STATE OF INCORPORATION:			VA
    		FISCAL YEAR END:			0228

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-31420
    		FILM NUMBER:		21912429

    	BUSINESS ADDRESS:
    		STREET 1:		12800 TUCKAHOE CREEK PARKWAY
    		CITY:			RICHMOND
    		STATE:			VA
    		ZIP:			23238
    		BUSINESS PHONE:		(804) 747-0422

    	MAIL ADDRESS:
    		STREET 1:		12800 TUCKAHOE CREEK PARKWAY
    		CITY:			RICHMOND
    		STATE:			VA
    		ZIP:			23238
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>a2021additionaldefinitivep.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: a2021additionaldefinitivep.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>a2021carmaxnoticeandaccessb.jpg
    <TEXT>
    Document 2 - file: a2021carmaxnoticeandaccessb.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>a2021carmaxnoticeandaccessc.jpg
    <TEXT>
    Document 3 - file: a2021carmaxnoticeandaccessc.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>