Hair is a 1979 American musical anti-war comedy-drama film based on the 1968 Broadway musical Hair: The American Tribal Love-Rock Musical. Set against the backdrop of the hippie counterculture of the Vietnam era, the film focuses on a Vietnam War draftee who meets and befriends a "tribe" of hippies while en route to the army induction center. The hippies and their leader introduce him to marijuana, LSD and their environment of unorthodox relationships and draft evasion.

The film was directed by Miloš Forman (who was nominated for a César Award for his work on the film) and adapted for the screen by Michael Weller (who would collaborate with Forman on a second picture, Ragtime, two years later). Cast members include John Savage, Treat Williams, Beverly D'Angelo, Annie Golden, Dorsey Wright, Don Dacus, Cheryl Barnes and Ronnie Dyson. Dance scenes were choreographed by Twyla Tharp and were performed by Tharp's dancers. The film was nominated for two Golden Globes: Best Motion Picture – Musical or Comedy, and New Star of the Year in a Motion Picture (for Williams).