Alien
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, a lifeform with extraterrestrial intelligence
For fictional extraterrestrial life, see Extraterrestrials in fiction
Introduced species, a species not native to its environmentAlien(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), a media franchise
Xenomorph, the titular alien in the franchise

Films
Alien (film), a 1979 film by Ridley Scott
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), 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), 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) Australian–Italian science fiction film by Rolf de Heer
The Alien (2016 film), a 2016 Mexican film
The Alien (unproduced film), an incomplete 1960s Indian–American film
Alienoid, a 2022 South Korean film

Literature
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), a 1902 novel by Mary Tappan Wright
Aliens! (anthology) a 1980 anthology of science fiction edited by Gardner Dozois and Jack Dann
The Alien (novel), the eighth book in the Animorphs series by Katherine Applegate
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
The Aliens, the backing band for the American musician Jared Louche on his 1999 solo debut album Covergirl

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

Songs
"Alien" (Britney Spears song), 2013
"Alien" (Jonas Blue and Sabrina Carpenter song), 2018
"Alien", a song by Atlanta Rhythm from the album Quinella, 1981
"Alien", a song by Bush from the album Sixteen Stone, 1994
"Alien", a song by Erasure from the 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, 1980
"Alien", a song by Pennywise from the album Straight Ahead, 1999
"Alien", a song by Stray Kids from the album SKZ-Replay, 2022
"Alien", a song by Structures from the album Life Through a Window, 2014
"Alien", a song by the National from the album First Two Pages of Frankenstein, 2023
"Alien", a song by Third Day from the album Conspiracy No. 5, 1997
"Alien", a song by Thriving Ivory from the album Thriving Ivory, 2003
"Alien", a song by Tokio Hotel from the album Humanoid, 2009
"Alien", a 2020 song by Lee Su-hyun
"Alien", a 2020 song by Dennis Lloyd
"Aliens" (song), a 2017 song by Coldplay
"Aliens", a 1984 song by 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), based on the film
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), a text-only clone of Space Invaders written for the CP/M operating system on the Kaypro computer
Aliens (1990 video game), a game by Konami, based on the sequel of the film
See also: List of Alien, Predator, and Alien vs. Predator games

Other media
Alien (Armenian TV series), a 2017 melodrama series
Alien (sculpture), a 2012 work by David Breuer-Weil, in Mottisfont, Hampshire, England
Aliens (Dark Horse Comics line)
The Aliens (TV series), 2016 British sci-fi television series
"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
Alian District (Alien), in Taiwan

See also
Alians, an Islamic order
Alien Project (disambiguation)
Alien vs. Predator (disambiguation)
Astrobiology, the study of hypothetical alien life
ATLiens, a 1996 album by OutKast
Predator (disambiguation)
UFO (disambiguation)
Unidentified flying object (disambiguation)
All pages with titles beginning with Alien
All pages with titles containing Alien