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, a Superfight, 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. The referee for the night was 'Big' John McCarthy, who now 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.

UFC 6 marked the first appearance of David "Tank" Abbott, who would make an impression with his brutal 0:20 KO of John Matua, followed by a TKO victory over the much larger Paul Varelans. Abbott ultimately lost the tournament to the much better conditioned Oleg Taktarov, but quickly became a fan favorite with his heavy hands and brash, no nonsense personality.

Results

Alternate matches

• Alternate bout: Joel Sutton vs. Jack McGlaughlin
  Sutton wins by submission due to strikes at 2:01 of the first round.
• Alternate bout: Anthony Macias vs. He-Man Gipson
  Macias wins by submission due to strikes at 3:06 of the first round.

Main card

• Quarterfinal bout: David L. Abbott vs. John Matua
  Abbott by KO at 0:20 of the first round.
• Quarterfinal bout: Paul Varelans vs. Cal Worsham
  Varelans wins by KO (elbow to the head) at 1:02 of the first round.
• Quarterfinal bout: Patrick Smith vs. Rudyard Moncayo
  Smith wins by submission (rear naked choke) at 1:08 of the first round. Due to an injury sustained during this fight, Smith withdrew from the tournament.
• Quarterfinal bout: Oleg Taktarov vs. Dave Beneteau
  Taktarov wins by submission (front choke) at 0:57 of the first round.
• Semifinal bout: David L. Abbott vs. Paul Varelans
  Abbott wins by TKO due to strikes at 1:53 of the first round.
• Semifinal bout: Oleg Taktarov vs. Anthony Macias
  Taktarov wins by submission (guillotine choke) at 0:09 of the first round. Macias replaced Patrick Smith, who could not continue due to injury.
• Final bout: Oleg Taktarov vs. David L. Abbott
  Taktarov wins the UFC 6 Tournament by submission (rear naked choke) at 17:45 of the first round.
• Superfight: Ken Shamrock vs. Dan Severn
  Shamrock wins by submission (guillotine choke) at 2:14 of the first round.