Great Mazinger vs. Getter Robo G: Kuchu Daigekitotsu (グレートマジンガー対ゲッターロボG 空中大激突, Gurēto Majingā tai Gettā Robo Jī Kūchū Daigekitotsu, lit. Great Mazinger vs. Getter Robot G: Great Sky Clash) is an animated short film produced by Toei Doga. It is a crossover anime between Great Mazinger and Getter Robo G. It was originally shown in theaters along with Uchu Enban Daisenso. They both premiered in July 26, 1975 (1975-07-26) in Japan.

As with the rest of Toei's Mazinger Vs. animated films, the events presented in the film are not considered canon to either of the anime television series, but it is considered a direct sequel to the previous film Great Mazinger vs. Getter Robo.

Like most of the Mazinger movies, it was shown in some countries outside Japan where the TV series were broadcast. It is known as Il Grande Mazinga contro Getta Robot G in Italy, Gran Mazinger contra Getter Robo G in Spain and مازنجر الكبير يقاتل جيتا روب in the Middle East.