- I Think We're Alone Now (2018)
R | Drama/Science fiction
- I Come in Peace (1991)
R | Action/Science fiction
- The Incredible Melting Man (1977)
R | Science fiction/Horror
- I'll Follow You Down (2013)
NR | Science fiction/Mystery
- Invasion of the Body Snatchers (1956)
NR | Science fiction/Horror
- Invasion of the Neptune Men (2006)
NR | Science fiction
- Invasion of the Star Creatures
NR | Science fiction
- In the Year 2889
NR | Science fiction
- I Am Mortal
NR | Science fiction
- Independence Day: 20th Anniversary Edition: Extended Cut (2008)
NR | Action/Science fiction