An Unmarried Woman is a 1978 American romantic comedy-drama film written and directed by Paul Mazursky and starring Jill Clayburgh, Alan Bates, Michael Murphy, and Cliff Gorman. The film was nominated for three Academy Awards: Best Picture, Best Original Screenplay, and Best Actress (Clayburgh).

Irwin Lawrence "Paul" Mazursky was an American film director, screenwriter, and actor. Known for his dramatic comedies that often dealt with modern social issues, he was nominated for five Academy Awards for Bob & Carol & Ted & Alice (1969), An Unmarried Woman (1978), Harry and Tonto (1974), and Enemies, A Love Story (1989). He is also known for directing such films as Next Stop, Greenwich Village (1976), Moscow on the Hudson (1984), Down and Out in Beverly Hills (1986), Moon over Parador (1988), and Scenes from a Mall (1991).