{{Wiktionary}}
'''Alien''' may refer to:
==Science and engineering==
* [[Alien (biology)]]
* [[Extraterrestrial life]], in scientific context.
** [[Extraterrestrial life in popular culture]]

==Film and television==
* [[Alien (film series)]]:
** [[Alien (film)|''Alien'' (film)]] (1979 film), by Ridley Scott, which in turn inspired the following related works:
** [[Aliens (film)|''Aliens'' (film)]] (1986 film), the sequel to the 1979 film.
** ''[[Alien³]]'' (1992 film), the third ''Alien'' movie.
** ''[[Alien: Resurrection]]'' (1997 film), the fourth ''Alien'' movie.
** ''[[Alien vs. Predator]]'' a film series, a comic book series, novel series, and video game series.
** ''[[Aliens vs. Predator: Requiem]]'' the second film in the ''Alien vs. Predator'' series (sixth in the ''Alien'' series)
** [[Xenomorph (Alien)]], the alien creatures from the ''Alien'' movies.
** Spin-offs:
*** [[Aliens (comic book)|''Aliens'' (comic book)]], a group of comic book series.
*** [[Aliens (novel series)|''Aliens'' (novel series)]], a number of novels based on the series.
*** [[Aliens (video game)|''Aliens'' (video game)]], a number of video games.
*** [[Aliens (arcade game)|''Aliens'' (arcade game)]], a 1990 arcade shoot 'em up by Konami.
*[[Alien (Law & Order: Special Victims Unit)|"Alien" (Law & Order: Special Victims Unit)]], an episode of ''Law & Order: Special Victims Unit''
* ''[[The Alien]]'', a cancelled film with a script by Satyajit Ray.
*[[Svešais]] ([[English language|English]]: Alien) (1988 film)

==Computing==
* [[Alienware]] Computer Corporation, a division of [[Dell]].
* [[Alien (software)]], computer program that converts between different Linux package formats.
* [[AliEn (ALICE Environment)]], software/grid middleware used [[CERN]].

==Music==
* [[The Aliens (reggae group)]], a 1970s vocal group from [[Jamaica]] whose members included [[Barry Brown (singer)|Barry Brown]] and [[Rod Taylor (singer)|Rod Taylor]]
* [[The Aliens]], a funk band from Scotland.
* [[Alien (album)|''Alien'' (album)]], a 2005 album by metal project Strapping Young Lad.
* [[Aliens (album)|''Aliens'' (album)]], the album by Irish celtic rock band [[Horslips]].
* Alien#Six13, a synth music artist.
* [[Atliens]], a 1996 album by rap group OutKast.
* [[Alien (song)]], a 1999 song by [[Pennywise]].
* [[Alien (Third Day song)]], a [[1997]] song from [[Christian rock]] group [[Third Day]].

==Miscellaneous==
* [[Alien (law)]], owing political allegiance to another country or government. A person who is neither a native nor a citizen of the country of residence. '''Person''' refers both to humans, which US law calls ''individuals'' as well as corporations.
* [[Alien (signifier)]], use in literature and criticism as the embodiment of an outside perspective or the sense of the other.
* [[Alien Technology]], a maker of UHF RFID tags.

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