Alien
- Blwyddyn: 1979
- Gwlad: United States of America
- Genre: Horror, Science Fiction
- Stiwdio: 20th Century Fox, Brandywine Productions
- Allweddair: android, spacecraft, space marine, biology, dystopia, countdown, space suit, beheading, space travel, cowardice, alien, space, female protagonist, parasite, space opera, cosmos, xenomorph
- Cyfarwyddwr: Ridley Scott
- Cast: Tom Skerritt, Sigourney Weaver, Veronica Cartwright, Harry Dean Stanton, John Hurt, Ian Holm