Alien primarily refers to: * Alien (law), a person in a country who is not a national of that country ** Enemy alien, the above in times of war * Extraterrestrial life, life which does not originate from Earth ** Specifically, intelligent extraterrestrial beings; see List of alleged extraterrestrial beings ** For fictional extraterrestrial life, see Extraterrestrials in fiction * Introduced species, a species not native to its environment Alien(s), or The Alien(s) may also refer to:

Science and technology

* AliEn (ALICE Environment), a grid framework * Alien (file converter), a Linux program * Alien Technology, a manufacturer of RFID technology

Arts and entertainment

* Alien (franchise), ''Alien'' (franchise), a media franchise ** Alien (creature in Alien franchise), Alien (creature in ''Alien'' franchise)

Films

* Alien (film), ''Alien'' (film), a 1979 film by Ridley Scott ** Aliens (film), ''Aliens'' (film), second film in the franchise from 1986 by James Cameron ** ''Alien 3'', third film in the franchise from 1992 by David Fincher ** ''Alien Resurrection'', fourth film in the franchise from 1997 by Jean-Pierre Jeunet ** Alien vs. Predator (film), ''Alien vs. Predator'' (film), fifth film in the franchise from 2004 by Paul W. S. Anderson ** ''Aliens vs. Predator: Requiem'', sixth film in the franchise from 2007 by the Brothers Strause ** Prometheus (2012 film), ''Prometheus'' (2012 film), seventh film in the franchise from 2012 by Ridley Scott ** ''Alien: Covenant'', eighth film in the franchise from 2017 by Ridley Scott * ''Alien 2: On Earth'', a 1980 unofficial sequel of the 1979 ''Alien'' film *''Alien Visitor'' (also titled ''Epsilon'') (1995 film) AustralianItalian science fiction film by Rolf de Heer * The Alien (2016 film), ''The Alien'' (2016 film), a 2016 Mexican film * The Alien (unproduced film), ''The Alien'' (unproduced film), an incomplete 1960s IndianAmerican film * Alien (2022 film), ''Alien'' (2022 film), an upcoming South Korean film

Literature

* Alien novels, ''Alien'' novels, an extension of the ''Alien'' franchise * ''Aliens: Colonial Marines Technical Manual'', a 1995 book by Lee Brimmicombe-Wood, a guide to the fictional United States Colonial Marines * Aliens (Tappan Wright novel), ''Aliens'' (Tappan Wright novel), a 1902 novel by Mary Tappan Wright * Aliens!, ''Aliens!'' (anthology) a 1980 anthology of science fiction edited by Gardner Dozois and Jack Dann * The Alien (Animorphs), ''The Alien'' (Animorphs), the eighth book in the ''Animorphs'' series * The Aliens (play), ''The Aliens'' (play), a 2010 play by Annie Baker

Music

Performers

* Alien (band), a 1980s Swedish rock group * The Aliens (Australian band), a 1970s new wave group * The Aliens (Scottish band), a 2005–2008 rock group

Albums

* Alien (soundtrack), ''Alien'' (soundtrack), 1979 * Alien (Beam album), ''Alien'' (Beam album), 2022 * Alien (Northlane album), ''Alien'' (Northlane album), 2019 * Alien (Strapping Young Lad album), ''Alien'' (Strapping Young Lad album), 2005 * ''Alien'', a 1989 EP by Tankard (band), Tankard * Aliens (soundtrack), ''Aliens'' (soundtrack), 1987

Songs

* Alien (Britney Spears song), "Alien" (Britney Spears song), 2013 * Alien (Jonas Blue and Sabrina Carpenter song), "Alien" (Jonas Blue and Sabrina Carpenter song), 2018 * "Alien", a song by Atlanta Rhythm from the album Quinella (album), Quinella, 1981 * "Alien", a song by Bush from the album ''Sixteen Stone'', 1994 * "Alien", a song by Erasure from the album ''Loveboat (album), Loveboat'', 2000 * "Alien", a song by Japan from the album ''Quiet Life'', 1979 * "Alien", a song by Lamb from the album ''Fear of Fours'', 1999 * "Alien", a song by Nerina Pallot from the album ''Dear Frustrated Superstar'', 2001 * "Alien", a song by P-Model from the album ''Landsale (album), Landsale'', 1980 * "Alien", a song by Pennywise from the album ''Straight Ahead (Pennywise album), Straight Ahead'', 1999 * "Alien", a song by Structures from the album ''Life Through a Window'', 2014 * "Alien", a song by Third Day from the album ''Conspiracy No. 5'', 1997 * "Alien", a song by Thriving Ivory from the album Thriving Ivory (album), Thriving Ivory, 2003 * "Alien", a song by Tokio Hotel from the album ''Humanoid (album), Humanoid'', 2009. Fans of the band call themselves "Aliens". * "Alien", a 2020 song by Lee Su-hyun (singer, born 1999), Lee Suhyun * Aliens (song), "Aliens" (song), a 2017 song by Coldplay * "Aliens", a 1984 song by Warlord (band), Warlord * "The Alien", a song by Dream Theater from the album ''A View from the Top of the World'', 2021

Video games

* Alien (1984 video game), ''Alien'' (1984 video game), based on the film * Alien (Atari 2600), ''Alien'' (Atari 2600), a 1982 maze game based on the 1979 film * ''Alien: Isolation'', a 2014 video game based on the ''Alien'' science fiction horror film series * Aliens (1982 video game), ''Aliens'' (1982 video game), a text-only clone of ''Space Invaders'' written for the CP/M operating system on the Kaypro computer * Aliens (1990 video game), ''Aliens'' (1990 video game), a game by Konami, based on the sequel of the film *

Other media

* Alien (Armenian TV series), ''Alien'' (Armenian TV series), a 2017 melodrama series * Alien (sculpture), ''Alien'' (sculpture), a 2012 work by David Breuer-Weil, in Mottisfont, Hampshire, England * Aliens (Dark Horse Comics line), ''Aliens'' (Dark Horse Comics line) * The Aliens (TV series), ''The Aliens'' (TV series), 2016 British sci-fi television series * Aliens (Roseanne), "Aliens" (''Roseanne''), a 1992 television episode

Other uses

* Alien (shipping company), a Russian company * Alien Sun (born 1974), Singaporean actress * ''Alien'', a perfume by Thierry Mugler#Fragrances, Thierry Mugler