Bye-Bye Jupiter is a 1984 Japanese science fiction film directed by Sakyo Komatsu and Koji Hashimoto and co-produced and written by Komatsu. An early draft of the film's story was novelized by Komatsu two years prior to its release as Sayonara Jupiter, which won the 1983 Seiun Award. Akihiko Hirata made his final film appearance in the film.

Sakyo Komatsu was a Japanese science fiction writer and screenwriter. He was one of the most well known and highly regarded science fiction writers in Japan.