UFC 25: Ultimate Japan 3 was a mixed martial arts event held by the Ultimate Fighting Championship on April 14, 2000 at the Yoyogi National Gymnasium in Tokyo, Japan.

UFC 29: Defense of the Belts was a mixed martial arts event held by the Ultimate Fighting Championship on December 16, 2000 at Differ Ariake Arena in Tokyo, Japan.

UFC Japan: Ultimate Japan (aka UFC 15.5) was a mixed martial arts event held by the Ultimate Fighting Championship on December 21, 1997, in Yokohama, Japan. The event was seen on pay per view in the United States, on cable TV in Japan, and was later released on home video. It featured a four-man heavyweight tournament, the first ever UFC Middleweight Championship bout, a Heavyweight Championship bout, a Superfight and was the first UFC appearance of MMA legends Kazushi Sakuraba and Frank Shamrock. It was the first event to be located in a country other than the United States or its territories.

Pride Shockwave 2004 (marketed in Japan as "Otoko Matsuri - Sadame") was a mixed martial arts event held by Pride Fighting Championships. The event took place at the Saitama Super Arena on December 31st, 2004. This event held the final bout of the 2004 Heavyweight Grand Prix because it had ended in a no contest at the Final Conflict event back in August.