Battle Royale II: Requiem (Japanese: バトル・ロワイアルII 鎮魂歌, Hepburn: Batoru Rowaiaru Tsū Rekuiemu) is a 2003 Japanese dystopian action film directed by Kinji Fukasaku and Kenta Fukasaku, who co-wrote the screenplay with Norio Kida. It is the sequel to the 2000 film Battle Royale, which in turn was based on the 1999 novel of the same name by Koushun Takami. Unlike the first film, Requiem is an original story. It is set three years after the events of the previous film and follows Shuya Nanahara, who has now become an international terrorist intending to bring down the Japanese totalitarian government. As a result, another class of ninth graders is kidnapped and sent to eliminate Nanahara within a limited time period of 72 hours.

Director Kinji Fukasaku, who helmed the first film, started production but died of prostate cancer on January 12, 2003, after shooting only one scene with Beat Takeshi. His son Kenta Fukasaku, who wrote the screenplay for both films, completed it in his directorial debut and dedicated it to his father.

Battle Royale II: Requiem was theatrically released in Japan in July 2003, by Toei. In stark contrast to its predecessor, it drew negative reviews from critics and grossed $14.9 million against a budget of $9 million, less than half of what the previous film grossed with double the budget. In 2005, an extended version, entitled Revenge, which runs 20 minutes longer than the theatrical cut, was released on DVD. It included additional action, improved effects, slow motion shots, new score in several scenes, and a extended storyline.