The 27th Day
- Blwyddyn: 1957
- Gwlad: United States of America
- Genre: Science Fiction
- Stiwdio: Romson Productions, Columbia Pictures
- Allweddair: flying saucer, decision, alien, alien weapon
- Cyfarwyddwr: William Asher
- Cast: Gene Barry, Valerie French, George Voskovec, Azemat Janti, Stefan Schnabel, Friedrich von Ledebur