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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 26,966 Science Fiction titles — no signup, no subscription required. Updated daily with the newest Science Fiction releases.

The Gun (2014)HD
The Gun (2014)
American Samurai (2023)HD
American Samurai (2023)
Island of the Fishmen (1979)HD
Island of the Fishmen (1979)
The Return of the Incredible Hulk (1977)HD
The Return of the Incredible Hulk (1977)
El Camino (2020)HD
El Camino (2020)
The Brain-Stealers (1968)1080P
The Brain-Stealers (1968)
In Vitro (2025)HD
In Vitro (2025)
Mongolian Death Worm (2010)HD
Mongolian Death Worm (2010)
28 Years Later: Part IIIHD
28 Years Later: Part III
Hysteric Nelly (2023)HD
Hysteric Nelly (2023)
Morendo (2023)HD
Morendo (2023)
Alter Ego (2016)HD
Alter Ego (2016)
S4 (2008)HD
S4 (2008)
Doctor Who: The Snowmen (2012)1080P
Doctor Who: The Snowmen (2012)
Mutant: Ghost War Girl (2022)HD
Mutant: Ghost War Girl (2022)
Darwin '74 (2025)HD
Darwin '74 (2025)
Marshmallow (2025)HD
Marshmallow (2025)
Space Battleship Yamato 2199: Odyssey of the Celestial Ark (2014)1080P
Space Battleship Yamato 2199: Odyssey of the Celestial Ark (2014)
The Day the World Ended (2001)HD
The Day the World Ended (2001)
Black Mist (2024)HD
Black Mist (2024)
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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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