Dissidia Final Fantasy is a fighting game with action role-playing elements developed and published by Square Enix for the PlayStation Portable as part of the campaign for the Final Fantasy series' 20th anniversary. It was released in Japan on December 18, 2008, in North America on August 25, 2009, and in Australia and Europe in September. It was then re-released in Japan, based on the North American version, as Dissidia Final Fantasy: Universal Tuning, on November 1, 2009.

Final Fantasy is a fantasy anthology media franchise created by Hironobu Sakaguchi which is owned, developed, and published by Square Enix. The franchise centers on a series of fantasy role-playing video games. The first game in the series was released in 1987, with 16 numbered main entries having been released to date.