Alien

Alien may mean:

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• Extraterrestrial life, in both scientific and popular contexts
• Alien (law), a person who is neither a native nor a citizen of their country of residence
• Alien (film), by Ridley Scott, which spawned several sequels
• Aliens
• Alien³
• '
• Alien vs. Predator, a crossover with the Predator series of films
• Xenomorph, the fictional creature featured in the Alien series
• Alien (biology), a non-native species
• Alien (computing), a program that converts between different Linux package distribution file formats
• Alien Ant Farm, a pop rock band from the USA

Aliens may mean:

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• The Aliens, Roky Erickson's backing band
• Aliens From Space, a novel by Donald Keyhoe
• Aliens of the Deep, a documentary by James Cameron

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