O Pai Tirano (lit. The Tyrant Father) is a 1941 Portuguese film comedy directed by António Lopes Ribeiro, starring Vasco Santana, Ribeirinho (Francisco Ribeiro), Leonor Maia, Teresa Gomes and Laura Alves. It is one of the best-known comedies of its genre, the comédia à portuguesa of the Golden Age of Portuguese cinema, still popular six decades after its release. O Pai Tirano was the first film produced and directed by António Lopes Ribeiro.