Watch Science Fiction Movies for Free in 123Movies
Welcome to 123Movies. Watch Science Fiction movies for free in 123movies with official verified HD previews for the most popular and critically acclaimed Science Fiction titles of all time. Futuristic technology, space exploration, time paradoxes, and alien encounters. Explore our curated catalog below with instant streaming.
Browse science fiction movies here, each with its official trailer, cast, release date and TMDB user score. TMDB currently lists more than 20,000 science fiction movies. The most popular right now include Spider-Man: Brand New Day (2026), Resident Evil (2026) and The End of Oak Street (2026). Among titles with at least 300 votes, Project Hail Mary (2026) has the highest TMDB score at 8.6/10.
Top 10 Highest-Rated Science Fiction Movie Trailers
Recognized by critics and worldwide cinema audiences as landmark achievements in Science Fiction.
Project Hail Mary
Interstellar
Spider-Man: Into the Spider-Verse
The Empire Strikes Back
Inception
Spider-Man: Across the Spider-Verse
Back to the Future
The Wild Robot
Neon Genesis Evangelion: The End of Evangelion
The Matrix
Spider-Man: Brand New Day
Resident Evil
The End of Oak Street
Colony
After Impact
Avengers: Endgame
Project Hail Mary
Resident Evil: Welcome to Raccoon City
Rage of Stars
Backrooms
War of the Worlds
Avengers: Infinity War
Disclosure Day
Avatar: Fire and Ash
Interstellar
The Mandalorian and Grogu
Avengers: Doomsday
The Avengers
Supergirl
Spider-Man: No Way Home
Science Fiction Movies: Frequently Asked Questions
What are the highest-rated science fiction movies?
Based on TMDB user scores (titles with at least 300 votes), the top-rated science fiction movies include Project Hail Mary (2026) at 8.6/10, Interstellar (2014) at 8.5/10, Spider-Man: Into the Spider-Verse (2018) at 8.4/10, The Empire Strikes Back (1980) at 8.4/10 and Inception (2010) at 8.4/10.
What are the most popular science fiction movies right now?
By current TMDB popularity, trending science fiction movies include Spider-Man: Brand New Day (2026), Resident Evil (2026), The End of Oak Street (2026), Colony (2026) and After Impact (2026).
How many science fiction movies are there?
TMDB currently lists more than 20,000 movies in the Science Fiction genre.
Can I watch science fiction movies for free on 123Movies?
123Movies shows official science fiction movie trailers for free, along with cast and release information. Full movies are not hosted or linked on this site.