Heisei Rider vs. Shōwa Rider: Kamen Rider Taisen feat. Super Sentai (平成ライダー対昭和ライダー 仮面ライダー大戦 feat.スーパー戦隊, Heisei Raidā Tai Shōwa Raidā Kamen Raidā Taisen Fīcharingu Sūpā Sentai) is a Japanese superhero film featuring a crossover within the Kamen Rider Series, as well as the Super Sentai series. Scheduled for release on March 29, 2014, characters from all of the Kamen Rider Series, as far back as 1971's Kamen Rider up through the currently airing series Kamen Rider Gaim appeared, with many of the original actors reprising their roles, including Kamen Rider's Hiroshi Fujioka. The film serves as a 15th anniversary commemoration of the Heisei period run of the Kamen Rider Series, and of Gaim being the 30th main Kamen Rider overall.

The film features a battle between the Kamen Riders from the Shōwa period of Japanese history with the Kamen Riders from the Heisei period, orchestrated by the evil Kamen Rider Fifteen of the Badan Empire who has the powers of the 15 Heisei Kamen Riders at his disposal. Some warriors of the Super Sentai Series also enter the fray in the film's climax scene.

In the lead up to the film, Toei allowed fans to vote on who would win in the film's climactic battle: the Shōwa Riders or the Heisei Riders. On opening day, it was revealed that the Heisei Riders won the vote by a narrow margin. The Shōwa Rider ending initially won the poll but it got an extension that allowed the Heisei ending to take the lead at the end. The ending with the Shōwa Riders winning was also featured on the home video release.

On opening weekend, the weekly broadcasts of ToQger and Gaim were replaced by a one-hour special titled "Ressha Sentai ToQger vs. Kamen Rider Gaim: Spring Break Combined Special" (烈車戦隊トッキュウジャーＶＳ仮面ライダー鎧武春休み合体スペシャル, Ressha Sentai Tokkyūjā Tai Kamen Raidā Gaimu Haruyasumi Gattai Supesharu), serving as a prequel to the events of the film that explains the ToQgers' connection, the cause of the war, and the involvement of Ambassador Darkness and the Badan Empire.