UFC 6: Clash of the Titans was the sixth mixed martial arts event held by the Ultimate Fighting Championship on July 14, 1995, at the Casper Events Center in Casper, Wyoming. The event was seen live on pay per view in the United States, and later released on home video.
UFC 6 featured an eight-man tournament, and two alternate fights which were not shown on the live pay-per-view broadcast. The tournament had no weight classes, or weight limits. Each match had no rounds; therefore no judges were used for the night. A 20 minute time limit was imposed for the quarterfinal and semi-final round matches in the tournament. The finals of the tournament and the Superfight had a 30 minute time limit and, if necessary, a five minute overtime.
This event continued the Superfight format from UFC 5 to determine a reigning champion for tournament winners to face. Ken Shamrock remained in the spot due to his perceived dominance in the previous superfight with Royce Gracie, and his opponent was UFC 5 champion Dan Severn in a match dubbed as "The Clash of the Titans".
The referee for the night was 'Big' John McCarthy, who had the power to restart the fight from a standing position if the fighters were stalemate and no progress was being made by either one. Michael Buffer served as the guest ring announcer for the night.
The event drew 240,000 buys on pay per view.