Saber + Zenkaiger: Super Hero Senki (セイバー＋ゼンカイジャー スーパーヒーロー戦記, Seibā Zenkaijā Sūpā Hīrō Senki, Saber + Zenkaiger: Super Hero War Chronicle) is a 2021 Japanese superhero crossover film between the Kamen Rider and Super Sentai franchises and was released on July 22, 2021, in a double billing with a special film for the then-upcoming Kamen Rider Revice.

The casts of Kamen Rider Saber and Kikai Sentai Zenkaiger are featured, though some cast members of other series such as Mashin Sentai Kiramager, Kamen Rider Zero-One, Kamen Rider Zi-O, Uchu Sentai Kyuranger, Kamen Rider OOO, Samurai Sentai Shinkenger, Kamen Rider Den-O, Tokusou Sentai Dekaranger, Himitsu Sentai Gorenger and Kamen Rider also participate. Additionally, the titular protagonists of Kamen Rider Revice, Kamen Rider Revi and Kamen Rider Vice, make their first appearance.

The film pays tribute to the 50th anniversary of the Kamen Rider franchise and the 45th anniversary of the Super Sentai franchise while also paying homage to the original creator of both, Shotaro Ishinomori.