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.

Headlining the card were the two coaches from The Ultimate Fighter 2, Rich Franklin and Matt Hughes, scheduled to defend their middleweight and welterweight titles, respectively.

This event marked the first time that an Ultimate Fighter contestant, season one's Nate Quarry, would compete for a UFC championship.

UFC 56 drew a live gate of $1,986,600, with 9,995 tickets sold.