Uchu Enban Daisenso (宇宙円盤大戦争, Uchū Enban Daisensō, "Battlefield of The Space Saucers") is a 1975 Japanese animated short film created by Go Nagai and produced by Toei Doga.

It was originally shown along with the short film Great Mazinger tai Getter Robot G: Kuchu Daigekitotsu, also from Toei and Nagai.

The film is considered the prototype for the future anime television series UFO Robot Grendizer, which premiered the same year.

The Yaban forces originate from a planet of the same name and primarily consist of green compact saucers that fire orange lasers, bladed discs, chains, and can morph into wingless dragons or tanks, blue saucers that fire missiles, and the main command ship called the Quinn Byrne.

The Yaban forces eventually confront Duke Fleed and the Gattaiger near the end of the movie.