Kamen Rider Zi-O the Movie: Over Quartzer (劇場版 仮面ライダージオウ Over Quartzer, Gekijōban Kamen Raidā Jiō Ōvā Kwōtsā) is a 2019 Japanese superhero film, serving as the film adaptation and alternate ending of the 2018–2019 Japanese Drama Kamen Rider Zi-O. The film also pays tribute to Kamen Rider Drive and introduces the main character of Kamen Rider Zero-One. It was released in Japan on July 26, 2019, in a double billing with Kishiryu Sentai Ryusoulger the Movie: Time Slip! Dinosaur Panic.

The movie's title is a reference to the show's theme song, which also bears the same title.