Extraterrestrial may refer to:
Science
- Extraterrestrial life, life that occurs outside of Earth and that probably did not originate from Earth
Media
- Extraterrestrial (TV program), a 2005 television series broadcast on National Geographic Channel, also known as Alien Worlds in the UK
- Extraterrestrial: The First Sign of Intelligent Life Beyond Earth, 2021 popular science book by Avi Loeb
- Extraterrestrial (2011 film), a 2011 Spanish film by Nacho Vigalondo
- Extraterrestrial (2014 film), a 2014 American film by Colin Minihan and written by The Vicious Brothers
- E.T. the Extra-Terrestrial, a 1982 film by Steven Spielberg
- Extraterrestrials in fiction
Music
- "Extraterrestrial" (Tynan and Kompany song), 2018
- Extraterrestrial (Joker Xue song), 2020
- Extraterrestrial (album), a 2020 album by Joker Xue
- Extraterrestrial World Tour by Joker Xue, 2021-2025