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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 26,778 Science Fiction titles — no signup, no subscription required. Updated daily with the newest Science Fiction releases.

Beyond the Trail (2025)HD
Beyond the Trail (2025)
Mr. Sunshine (1989)1080P
Mr. Sunshine (1989)
One Fine Evening in 2000 (1973)HD
One Fine Evening in 2000 (1973)
Catherine and I (1980)HD
Catherine and I (1980)
Not of This Earth (1957)HD
Not of This Earth (1957)
Regreso al PasadoHD
Regreso al Pasado
Hello, Friend (2003)HD
Hello, Friend (2003)
Island of the Doomed (1967)HD
Island of the Doomed (1967)
Alienween (2016)HD
Alienween (2016)
Prisoner X (2016)HD
Prisoner X (2016)
The Robinsons: Lost in Space (2004)HD
The Robinsons: Lost in Space (2004)
Ozma (2023)HD
Ozma (2023)
The Underneath (2013)HD
The Underneath (2013)
Alien: Alone (2019)HD
Alien: Alone (2019)
Planet Earth (1974)HD
Planet Earth (1974)
Star☆Twinkle PreCure the Movie: Wish Upon a Song of Stars (2019)HD
Star☆Twinkle PreCure the Movie: Wish Upon a Song of Stars (2019)
Storm Trooper (1998)HD
Storm Trooper (1998)
Unturnoffable Garnet Anniversary Holiday Reunion SpecialHD
Unturnoffable Garnet Anniversary Holiday Reunion Special
Megaboa (2021)HD
Megaboa (2021)
AuroraHD
Aurora
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123Movies

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