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Trailers shown here are official content embedded from YouTube. Watch the full titles on the rights-holders' official streaming platforms.© 2026 123Movies. All rights reserved.
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Science Fiction Movies & TV Shows Online Free

Stream the best Science Fiction movies and TV shows free on 123Movies in HD. Browse 26,795 Science Fiction titles — no signup, no subscription required. Updated daily with the newest Science Fiction releases.

Fahrenheit 451 (2018)HD
Fahrenheit 451 (2018)
Underwater Ghost (2025)HD
Underwater Ghost (2025)
Night Breakers (2021)1080P
Night Breakers (2021)
Alien: Containment (2019)HD
Alien: Containment (2019)
Tidal Wave: No Escape (1997)HD
Tidal Wave: No Escape (1997)
Something's Askew in Zonine Valley! (2026)HD
Something's Askew in Zonine Valley! (2026)
Hello World :) (2013)HD
Hello World :) (2013)
Rainmakers (2025)HD
Rainmakers (2025)
Hulk: Where Monsters Dwell (2016)HD
Hulk: Where Monsters Dwell (2016)
Robinson Crusoe on Mars (1964)HD
Robinson Crusoe on Mars (1964)
Digimon Adventure tri. Part 2: Determination (2016)HD
Digimon Adventure tri. Part 2: Determination (2016)
Absolute Aggression (1996)HD
Absolute Aggression (1996)
A Story of Lou Bo-Wen (1971)HD
A Story of Lou Bo-Wen (1971)
GoGo Sentai Boukenger vs. Super Sentai (2007)1080P
GoGo Sentai Boukenger vs. Super Sentai (2007)
Cherry 2000 (1987)HD
Cherry 2000 (1987)
Gridman Universe (2023)1080P
Gridman Universe (2023)
Akio Jissoji's Wonder Museum 2 (1992)HD
Akio Jissoji's Wonder Museum 2 (1992)
Abdulladzhan, or Dedicated to Steven Spielberg (1992)HD
Abdulladzhan, or Dedicated to Steven Spielberg (1992)
Invaders from Mars (1986)HD
Invaders from Mars (1986)
Close Encounter (2026)1080P
Close Encounter (2026)
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123Movies

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Trailers shown here are official content embedded from YouTube. Watch the full titles on the rights-holders' official streaming platforms.© 2026 123Movies. All rights reserved.
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