Love Affair is a 1939 American romance film, co-starring Charles Boyer and Irene Dunne, and featuring Maria Ouspenskaya. It was directed by Leo McCarey and written by Delmer Daves and Donald Ogden Stewart, based on a story by McCarey and Mildred Cram. Controversial on concept, the official screenplay was re-tooled and rewritten to appease Hollywood censorship and relied on actor input and improvisation, causing long delays and budget extensions.

Charles Boyer was a French-American actor who appeared in more than 80 films between 1920 and 1976. After receiving an education in drama, Boyer started on the stage, but he found his success in American films during the 1930s. His memorable performances were among the era's most highly praised, in romantic dramas such as The Garden of Allah (1936), Algiers (1938), and Love Affair (1939), as well as the mystery-thriller Gaslight (1944). He received four Oscar nominations for Best Actor. He also appeared as himself on the CBS sitcom I Love Lucy.