JoJo's Bizarre Adventure: Diamond Is Unbreakable Chapter I is a 2017 Japanese action fantasy film directed by Takashi Miike from a screenplay by Itaru Era. It is based on the Diamond Is Unbreakable story arc of the manga series JoJo's Bizarre Adventure by Hirohiko Araki. Covering the first seventeen chapters, the film stars Kento Yamazaki, Ryunosuke Kamiki, Nana Komatsu, Masaki Okada, Mackenyu Arata, Takayuki Yamada and Yusuke Iseya. It was released in Japan by Toho and Warner Bros. Pictures on August 4, 2017. It was licensed for North American release by Viz Media.

Takashi Miike is a Japanese film director, film producer and screenwriter. He has directed over one hundred theatrical, video, and television productions since his debut in 1991. His films run through a variety of different genres, and range from violent and bizarre to dramatic and family-friendly movies. He is a controversial figure in the contemporary Japanese cinema industry, with several of his films being criticised for their extreme graphic violence. Some of his best known films are Audition, Ichi the Killer, Visitor Q, the Dead or Alive trilogy and various remakes: Graveyard of Honor, Hara-kiri and 13 Assassins. He has directed over 100 movies and also plays as an actor in 20+ more.