A Foreign Affair is a 1948 American romantic comedy-drama film directed by Billy Wilder and starring Jean Arthur, Marlene Dietrich, and John Lund. The screenplay by Charles Brackett, Wilder, and Richard L. Breen is based on a story by David Shaw adapted by Robert Harari.

Jean Arthur was an American Broadway and film actress whose career began in silent films in the early 1920s and lasted until the early 1950s.