UFC 13: The Ultimate Force was a mixed martial arts event held by the Ultimate Fighting Championship on May 30, 1997 in Augusta, Georgia.

The event was seen live on pay-per-view in the United States, and later released on home video.

This was the first appearance of two future UFC Champions and UFC Hall of Fame members Randy Couture[1][2] and Tito Ortiz,[3][4] who was an alternate in the lightweight tournament.

The show also featured the first and only UFC appearance of Tony Halme who had previously been a professional wrestler with World Wrestling Entertainment (then World Wrestling Federation) under the name of Ludvig Borga.

1 Tito Ortiz replaced Enson Inoue who withdrew due to injury.