I-J
| Title | Director | Cast | Genre | Notes |
|---|---|---|---|---|
| The Ice Follies of 1939 | Reinhold Schünzel | Joan Crawford, James Stewart, Lew Ayres, Lewis Stone | Musical | MGM |
| Idiot's Delight | Clarence Brown | Norma Shearer, Clark Gable, Edward Arnold | Comedy | MGN |
| In Name Only | John Cromwell | Carole Lombard, Cary Grant, Kay Francis | Drama | RKO |
| Intermezzo: A Love Story | Gregory Ratoff | Leslie Howard, Ingrid Bergman | Romantic Drama | Bergman's U.S. film debut |
| It's a Wonderful World | W. S. Van Dyke | Claudette Colbert, James Stewart, Guy Kibbee, Nat Pendleton | Romantic comedy | MGM |
| Jesse James | Henry King | Tyrone Power, Henry Fonda, Nancy Kelly, Randolph Scott | Western | 20th Century Fox |
| Joe and Ethel Turp Call on the President | Robert B. Sinclair | Ann Sothern, Lewis Stone, Walter Brennan | Comedy | MGM |
| Juarez | William Dieterle | Paul Muni, Bette Davis, Brian Aherne, Claude Rains | Bio-pic | Warner Bros. |
| Judge Hardy and Son | George B. Seitz | Mickey Rooney, Lewis Stone, Fay Holden | Comedy | MGM |
Read more about this topic: List Of American Films Of 1939