An alien and a robot land on Earth after World War II and tell mankind to be peaceful or face destruction.
Michael Rennie
Klaatu, alias Mr. Carpenter
Patricia Neal
Helen Benson
Billy Gray
Bobby Benson
Sam Jaffe
Prof. Jacob Barnhardt
Hugh Marlowe
Tom Stevens
Lock Martin
Gort
Freeman Lusk
General Cutler
Edith Evanson
Mrs. Crockett, landlady
Frank Conroy
Mr. Harley, Secretary to the President
Frances Bavier
Mrs. Barley, boarder
John Brown
George Barley, boarder
Olan Soule
Mr. Krull, boarder
Marjorie Crossland
Hilda, Barnhart's secretary
Elmer Davis
H.V. Kaltenborn
H. V. Kaltenborn
Drew Pearson
Gabriel Heatter
Gabriel Heatter (voice)
Harry Lauter
Lieutenant in Charge of Landing Site
James Doyle
Army Dr. White
Larry Dobkin
Balding Army Doctor
Robert Osterloh
Army Examining Doctor
Glenn Hardy
Radio Interviewer at Landing Site
Tyler McVey
Brady
House Peters Jr.
M.P. Captain at Barnhardt's
George Lynn
Conference Colonel Ryder
Dorothy Neumann
Margaret, Tom's secretary
Wheaton Chambers
Mr. Bleeker, jeweller
Carleton Young
Zone Five Lieutenant Colonel
Harry Harvey
The Cab Driver
Sammy Ogg
Sammy, boy witness
Bess Flowers
Lady Outside Jewelry Store
James Seay
Government Man
Grady Galloway
Radar Operator
Hassan Khayyam
Indian Newscaster
John Barton
British Newscaster
Stuart Whitman
Sentry (scene deleted)
Rama Bai
Scientific Delegate
John Burton
British Radio Announcer
Bill Welsh
Radio Announcer (voice)
Guy Williams
Radio Operator (uncredited)
Lyle R. Wheeler
Art Direction
Robert Wise
Director
Addison Hehr
Julian Blaustein
Producer
Claude E. Carpenter
Set Decoration
Edmund H. North
Screenplay
Travilla
Costume Design
Bernard Herrmann
Original Music Composer
William Reynolds
Editor
Leo Tover
Director of Photography
Thomas Little
Perkins Bailey
Fred Sersen
Special Effects
Charles LeMaire
Wardrobe Master
Harry Bates
Original Story
Ben Nye
Makeup Artist
