Ultraman Zero THE MOVIE Super Decisive Battle! Belial Galactic Empire (ウルトラマンゼロ THE MOVIE 超決戦！ベリアル銀河帝国, Urutoraman Zero THE MOVIE: Chōkessen! Beriaru Ginga Teikoku, lit. "Ultraman Zero The Movie: Super Deciding Fight! The Belial Galactic Empire") is a 2010 Japanese superhero film in the Ultra Series to celebrate the franchise's 45th anniversary. It serves as a sequel to Mega Monster Battle: Ultra Galaxy Legend The Movie. The catchphrases for the movie are "Kaiser Belial descent. Zero, fight with light!" and "This is our light!".

The film was directed by Yuichi Abe. The lead character Run (who serves as Ultraman Zero's human form) is portrayed by Yu Koyanagi, the son of Bro. Tom of the Bubblegum Brothers. Other characters include Run's brother Nao, portrayed by Tatsuomi Hamada and Princess Emerana of Planet Esmeralda, portrayed by actress Tao Tsuchiya. The film will also feature a new version of Ultraman Belial called "Galactic Emperor Kaiser Belial". It will also feature Ultraman Zero's ultimate form, Ultimate Zero, by using the Shield of Baradhi which becomes the Ultimate Aegis.