Alien

Look up alien, aliens, or Alien in Wiktionary, the free dictionary.

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 environment

Alien(s), or The Alien(s) may also refer to: