Godzilla vs. SpaceGodzilla (ゴジラvsスペースゴジラ, Gojira tai SupēsuGojira) is a 1994 Japanese kaiju film directed by Kensho Yamashita, with special effects by Kōichi Kawakita. Distributed by Toho and produced under their subsidiary Toho Pictures, it is the 21st film in the Godzilla franchise, as well as the sixth film in the franchise's Heisei series. The film is notable for the introduction of the monster SpaceGodzilla, as well as the re-introduction of the mecha character M.O.G.U.E.R.A.; its first appearance on-screen since the 1957 film The Mysterians.

Godzilla vs. SpaceGodzilla stars Megumi Odaka, Jun Hashizume, Zenkichi Yoneyama, Akira Emoto, and Towako Yoshikawa, with Kenpachiro Satsuma as Godzilla. The film was released theatrically in Japan on December 10, 1994, and earned ¥1.65 billion in Japanese distributor rentals, it received mixed reviews from critics who praised the special effects and some battle scenes but criticized the storyline and pacing. Godzilla vs. SpaceGodzilla was released direct-to-video in the United States in 1999 by Columbia Tristar Home Video.

It was followed by Godzilla vs. Destoroyah, which serves as a finale to the Heisei Godzilla films, and was released on December 9, 1995.