UFC 56: Full Force was a mixed martial arts event held by the Ultimate Fighting Championship on November 19, 2005. It was held at the MGM Grand Arena in Las Vegas, Nevada, broadcast live on pay-per-view in the United States, and later released on DVD.

The Ultimate Fighter 2 was the second season of the mixed martial arts reality television series The Ultimate Fighter. The season featured a heavyweight and a welterweight division, with 9 fighters initially in each division. The UFC coaches for this season were welterweight and middleweight champions Matt Hughes and Rich Franklin. Season 1 coach and former UFC champion Randy Couture hosted and designed the team challenge segments, which if won would allow the winning team to pair a fighter from their team against another in elimination matches. The finale aired on November 5, 2005, and it set a ratings record for the UFC with a 2.0 overall rating. This season featured no coaches' fight because Hughes and Franklin had refused to fight each other, owing to their friendship. Although released on DVD in 2005, it has been set for re-release on September 18, 2007.