Léon Poirier (25 August 1884 – 27 June 1968) was a French film director, screenwriter and film producer best known for his silent films from 1913 onwards. He directed some 25 films between 1913 and 1949. His most famous film today is Verdun: Visions of History, a drama-documentary depicting the World War I Battle of Verdun. His later films adopted a form of poetic realism influenced by pictorialist photography.