None but the Lonely Heart is a 1944 American drama romance film which tells the story of a young Cockney drifter who returns home with no ambitions but finds that his family needs him. Adapted by Clifford Odets from the 1943 novel of the same title by Richard Llewellyn and directed by Odets, the film stars Cary Grant, Ethel Barrymore, and Barry Fitzgerald.

Clifford Odets was an American playwright, screenwriter, and actor. In the mid-1930s, he was widely seen as the potential successor to Nobel Prize–winning playwright Eugene O'Neill, as O'Neill began to withdraw from Broadway's commercial pressures and increasing critical backlash. From January 1935, Odets's socially relevant dramas were extremely influential, particularly for the remainder of the Great Depression. His works inspired the next several generations of playwrights, including Arthur Miller, Paddy Chayefsky, Neil Simon, and David Mamet. After the production of his play Clash by Night in the 1941–42 season, Odets focused his energies primarily on film projects, remaining in Hollywood until mid-1948. He returned to New York for five and a half years, during which time he produced three more Broadway plays, only one of which was a success. His prominence was eventually eclipsed by Miller, Tennessee Williams, and, in the early- to mid-1950s, William Inge.