I-J
| Title | Director | Cast | Genre | Notes |
|---|---|---|---|---|
| I Love You Again | W.S. Van Dyke | William Powell, Myrna Loy | Romantic comedy | |
| I Take This Woman | W. S. Van Dyke | Spencer Tracy, Hedy Lamarr, Laraine Day | Drama | |
| The Invisible Man Returns | Joe May | Cedric Hardwicke, Vincent Price, Nan Grey | Science fiction | Nominated for Academy Award. |
| The Invisible Woman | A. Edward Sutherland | Virginia Bruce, John Barrymore, John Howard | Science fiction Comedy | Nominated for Academy Award. |
| Irene | Herbert Wilcox | Anna Neagle, Ray Milland, Roland Young | Musical | Nominated for Academy Award. |
| Island of Doomed Men | Charles Barton | Peter Lorre | Thriller | |
| It All Came True | Lewis Seiler | Ann Sheridan, Jeffrey Lynn, Humphrey Bogart | Comedy | |
| Junior G-Men | Lewis D. Collins, Ray Taylor | Action Adventure Serial |
Read more about this topic: List Of American Films Of 1940