Madol Duwa (Mangrove Island) is a 1976 Sri Lankan drama film directed by Lester James Peries and produced by Upasena Marasinghe. The film stars Ajith Jinadasa as Upali, a young rebellious youth who travels to a small island to get away from the restrictive society around him. The film is based on Martin Wickremasinghe's 1947 novel Madol Doova. It was a commercial success

Based on a short story written by G.B. Senanayake in one of his short story collection known as "The Revenge," the film revolves around a murder committed for the purpose of gaining access to a hidden treasure.