Winner:The War of the Worlds (Paramount Pictures; directed by Byron Haskin; screenplay by Barré Lyndon; based on the novel by H.G. Wells)
The Beast from 20,000 Fathoms (Mutual Pictures/Warner Brothers; directed by Eugène Lourié; screenplay by Louis Morheim and Fred Freiberger; based on the story by Ray Bradbury)
Duck Dodgers in the 24 1/2 th Century (Warner Brothers; directed by Chuck Jones; written by Michael Maltese)
Invaders from Mars (National Pictures/20th Century Fox; directed by William Cameron Menzies; screenplay by Richard Blake; story by John Tucker Battle)
It Came from Outer Space (Universal; directed by Jack Arnold; screenplay by Harry Essex; story by Ray Bradbury)