The Day the Earth Stood Still
- Annu: 1951
- Paese: United States of America
- Genre: Science Fiction, Thriller
- Studio: 20th Century Fox
- Parolla chjave: spacecraft, flying saucer, peace, remote control, ufo, social commentary, giant robot, black and white, military, physics professor, humanity, alien technology
- Direttore: Robert Wise
- Cast: Michael Rennie, Patricia Neal, Billy Gray, Sam Jaffe, Hugh Marlowe, Lock Martin