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| Title | Director | Cast | Genre | Notes |
|---|---|---|---|---|
| I Accuse My Parents | Sam Newfield | Mary Beth Hughes | Crime Drama | |
| Idle Roomers | Del Lord | Three Stooges | Comedy, Short | Columbia Pictures |
| I'll Be Seeing You | William Dieterle | Ginger Rogers, Shirley Temple | Drama | Selznick International Pictures |
| In Our Time | Vincent Sherman | Ida Lupino, Paul Henreid | Romance | Warner Bros. |
| In Society | Jean Yarbrough | Abbott and Costello | Comedy | Universal Pictures |
| The Invisible Man's Revenge | Ford Beebe | Jon Hall, John Carradine | Sci-Fi, Horror | Universal Pictures |
| It Happened Tomorrow | René Clair | Dick Powell, Linda Darnell | Fantasy, Comedy | 2 Academy Award nominations |
| Jammin' the Blues | Gjon Mili | Short | ||
| The Keys of the Kingdom | John M. Stahl | Gregory Peck, Thomas Mitchell, Roddy McDowall | Drama | 20th Century Fox |
| Kismet | William Dieterle | Ronald Colman, Marlene Dietrich, James Craig | Historical | MGM |
| The Lady and the Monster | George Sherman | Vera Ralston | Sci-Fi, Horror | Republic Pictures |
| Lady in the Dark | Kurt Weill | Ginger Rogers, Ray Milland | Musical | |
| Lady, Let's Dance | Frank Woodruff | Belita | Musical | Monogram Pictures |
| Laura | Otto Preminger | Gene Tierney, Dana Andrews, Clifton Webb, Vincent Price, Judith Anderson | Film noir | from Vera Caspary novel |
| Lifeboat | Alfred Hitchcock | Tallulah Bankhead, William Bendix | War, Drama | Academy Award Best Script |
| Little Red Riding Rabbit | Friz Freleng | Animated, Short | Warner Bros. | |
| The Lodger | John Brahm | Merle Oberon, George Sanders, Laird Cregar | Horror | 20th Century Fox |
| Lost in a Harem | Charles Reisner | Abbott and Costello | Comedy | MGM |
| Man from Frisco | Robert Florey | Michael O'Shea, Anne Shirley | Spy | Republic |
| The Mask of Dimitrios | Jean Negulesco | Sydney Greenstreet, Peter Lorre | Film noir | from Eric Ambler novel |
| Meet Me in St. Louis | Vincente Minnelli | Judy Garland, Margaret O'Brien, Mary Astor | Musical | 4 Oscar nominations |
| Meet the People | Charles Reisner | Lucille Ball, Dick Powell | Musical | Metro-Goldwyn-Mayer |
| Memphis Belle: A Story of a Flying Fortress | William Wyler | Documentary | Paramount Pictures | |
| The Million Dollar Cat | Bill Hanna, Joseph Barbera | Animated Short | MGM | |
| Ministry of Fear | Fritz Lang | Ray Milland | Film noir | Paramount Pictures |
| The Miracle of Morgan's Creek | Preston Sturges | Eddie Bracken, Betty Hutton, William Demarest | Comedy | Paramount Pictures |
| The Monster Maker | Sam Newfield | J. Carrol Naish | Sci-Fi | |
| Mouse Trouble | Hanna Barbera | Tom and Jerry | Animated Short | MGM |
| Mr. Skeffington | Vincent Sherman | Bette Davis, Claude Rains | Drama | Warner Bros. |
| Mrs. Parkington | Tay Garnett | Greer Garson, Walter Pidgeon, Edward Arnold | Drama | |
| The Mummy's Curse | Leslie Goodwins | Lon Chaney | Horror | Universal Pictures |
| The Mummy's Ghost | Reginald Le Borg | Lon Chaney, John Carradine | Horror | Universal Pictures |
| Murder, My Sweet | Edward Dmytryk | Dick Powell, Claire Trevor | Film noir | RKO Pictures |
| Mystery of the River Boat | Lewis D. Collins, Ray Taylor | Serial | Universal Pictures | |
| National Velvet | Clarence Brown | Mickey Rooney, Elizabeth Taylor | Drama | MGM; won 2 Oscars |
| The Negro Soldier | Stuart Heisler | War Propaganda | ||
| Nevada | Edward Killy | Robert Mitchum, Anne Jeffreys | Western | RKO Pictures |
| No Dough Boys | Jules White | Three Stooges | Comedy Short | Columbia Pictures |
| None But the Lonely Heart | Clifford Odets | Cary Grant, Ethel Barrymore | Drama | Oscar for Barrymore |
| None Shall Escape | André De Toth | Marsha Hunt, Henry Travers | War Drama | Columbia Pictures |
| Nothing But Trouble | Sam Taylor | Laurel and Hardy | Comedy | MGM |
Read more about this topic: List Of American Films Of 1944