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.