Alien Nation may refer to:

• Alien Nation (Hip Hop Group)
• Alien Nation (film), the 1988 motion picture
• Alien Nation (TV series), the 1989–1990 television series
• Alien Nation: Dark Horizon, the first of 5 made-for-TV movies continuing the TV show
• Alien Nation: Body and Soul, the second of 5 made-for-TV movies continuing the TV show
• Alien Nation: Millennium, the third of 5 made-for-TV movies continuing the TV show
• Alien Nation: The Enemy Within, the fourth of 5 made-for-TV movies continuing the TV show
• Alien Nation: The Udara Legacy, the fifth of 5 made-for-TV movies continuing the TV show
• Alien Nation (Comic Books), a 1990s series of comic books based on the movie
• Alien Nation (book), a 1990s series of novels based on the TV show
• Alien Nation: Common Sense About America's Immigration Disaster, a 1995 book by Peter Brimelow
• Alien Nation (comedy album), a stand-up comedy album by George Lopez
• "Alien Nation" (song), a song by the German rock band Scorpions
• Alien Nation (rave), the annual New Zealand progressive, psychedelic trance rave
• Alien Nation (band), a rock band from Omaha consisting of guitarist Jim Ficenec and bassist Stephen Krupa.
• Alien Nation (Video Game) Is a Real Time Strategy game.

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