Klaatu / Mr. Carpenter
Helen Benson
Bobby Benson
Prof. Jacob Barnhardt
Tom Stevens
Gort
General Cutler
Mrs. Crockett
Mr. Harley
Mrs. Barley
George Barley
Mr. Krull
Hilda
Elmer Davis
H. V. Kaltenborn
Drew Pearson
Gabriel Heatter (voice)
Lieutenant in Charge of Landing Site
Army Dr. White
Balding Army Doctor
Army Examining Doctor
Radio Interviewer at Landing Site
Brady
M.P. Captain at Barnhardt's
Conference Colonel Ryder
Margaret
Mr. Bleeker
Zone Five Lieutenant Colonel
The Cab Driver
Sammy
Lady Outside Jewelry Store
Government Man (uncredited)
Radar Operator
Indian Newscaster
British Newscaster
Sentry (deleted scene)
Scientific Delegate
British Radio Announcer
Radio Announcer (voice)
Radio Operator (uncredited)
Art Direction
Director
Art Direction
Producer
Set Decoration
Screenplay
Costume Design
Original Music Composer
Editor
Director of Photography
Set Decoration
Costume Design
Special Effects
Wardrobe Master
Original Story
Makeup Artist
