Love Letters is a 1945 American romantic film noir directed by William Dieterle from a screenplay by Ayn Rand, based on the novel Pity My Simplicity by Christopher Massie. It stars Jennifer Jones, Joseph Cotten, Ann Richards, Cecil Kellaway, Gladys Cooper and Anita Louise. The plot tells the story of a man falling in love with an amnesiac woman with two personalities, who is believed to have killed his soldier friend.

William Dieterle was a German-born actor and film director who emigrated to the United States in 1930 to leave a worsening political situation. He worked in Hollywood primarily as a director for much of his career, becoming a United States citizen in 1937. He moved back to Germany in the late 1950s.