UFC 12: Judgement Day was a mixed martial arts event held by the Ultimate Fighting Championship on February 7, 1997 at the Dothan Civic Center in Dothan, Alabama. The event was seen live on pay per view in the United States, and later released on home video.
UFC 12 was the first UFC event to feature weight classes; heavyweights (200 lb and over) and lightweights (199 lb and under) battled in two separate mini tournaments, each consisting of two semifinal bouts and a finals match.
The event also featured a Superfight between Dan Severn and Mark Coleman. The fight would unify the UFC Superfight Championship with the UFC tournament championship and determine the first ever UFC Heavyweight Champion. Mark Coleman was a late substitution for Don Frye, who had earned the rematch with Severn after winning the Ultimate Ultimate 1996, but was unable to participate in UFC 12 because of injuries he had suffered in that previous event. Frye never returned to the UFC. "Judgement Day" also featured two alternate bouts in case of tournament injury.