The Union nationale (French pronunciation: ​[ynjɔ̃ nɑsjɔnal]) was a conservative and nationalist provincial political party in Quebec, Canada, that identified with Québécois autonomism. It was created during the Great Depression and held power in Quebec from 1936 to 1939, and from 1944 to 1960 and from 1966 to 1970. The party was founded by Maurice Duplessis, who led it until his death in 1959. The party was often referred to in English as the National Union, especially when it was still an electoral force, by both the media and, at times, the party.