K-L
| Title | Director | Cast | Genre | Notes |
|---|---|---|---|---|
| The Kid from Texas | S. Sylvan Simon | Dennis O'Keefe, Florence Rice, Jessie Ralph, Buddy Ebsen | Western | MGM |
| King of the Underworld | Lewis Seiler | Humphrey Bogart, Kay Francis | Crime | Warner Bros. |
| Lady of the Tropics | Jack Conway | Robert Taylor, Hedy Lamarr, Joseph Schildkraut | Romantic Drama | MGM |
| Let Freedom Ring | Jack Conway | Nelson Eddy, Virginia Bruce, Victor McLaglen, Lionel Barrymore | Musical | MGM |
| Let Us Live | John Brahm | Maureen O'Sullivan, Henry Fonda, Ralph Bellamy | Crime thriller | Columbia |
| The Little Princess | Walter Lang | Shirley Temple, Richard Greene, Anita Louise | Drama | 20th Century Fox |
| Love Affair | Leo McCarey | Irene Dunne, Charles Boyer | Drama | RKO Radio Pictures |
| Lucky Night | Norman Taurog | Myrna Loy, Robert Taylor | Drama | MGM |
Read more about this topic: List Of American Films Of 1939