Ric Flair 

(Inaugural-7/1/91)

Won the NWA World Heavyweight Championship on 1/11/91. Recognized as the WCW World Heavyweight Champion when WCW left the NWA.

Vacant 

(7/1/91-7/14/91)

Ric Flair stripped of title when he left the promotion.

Lex Luger 

(7/14/91-2/29/92)

Defeated Barry Windham for the vacant championship at The Great American Bash.

Bret Hart

(2/29/92-present)

Defeated Lex Luger at SuperBrawl II.