Sadma (transl. Trauma) is a 1983 Indian Hindi-language romantic drama film, written and directed by Balu Mahendra. The film stars Sridevi as Nehalata Malhotra, a young woman who regresses to childhood as result of retrograde amnesia after suffering a head injury in a car crash. She was lost, and ended up trapped in a brothel before being rescued by Somu (played by Kamal Hassan), a lonely school teacher who falls in love with her.

Released on 8 July 1983, the film was a remake of Mahendra's 1982 Tamil film Moondram Pirai, which also starred Sridevi and Haasan. Although a commercial failure upon release, Sadma was widely acclaimed by critics for its direction, screenplay, music and performances. Sridevi's performance as an amnesiac woman was widely praised.Sadma over the years has gained cult status. At the 31st Filmfare Awards, Sadma received three nominations: Best Actor (Kamal Haasan) Best Actress (Sridevi) and Best Story (Mahendra).