Kamen Rider ZO (仮面ライダーZO, Kamen Raidā Zetto Ō), translated Masked Rider ZO, is a 1993 Japanese tokusatsu superhero film directed by Keita Amemiya and co-produced between Toei Company and Bandai.Televi Magazine First Issue 31st Anniversary Project: All Hero Great Assembly (テレビマガジン創刊31周年記念企画), December 2002</ref> A Sega CD interactive movie was released for ZO in 1994, and was distributed in the United States as The Masked Rider: Kamen Rider ZO.

To commemorate the series' 40th anniversary, ZO was shown on Toei's pay-per-view channel in September 2011. The film's protagonist, Kamen Rider ZO, appears in the later Kamen Rider Decade television series and is a playable character in the 2011 Nintendo DS video game All Kamen Rider: Rider Generation.