Ali Shariati Mazinani (Persian: علی شریعتی مزینانی, 23 November 1933 – 18 June 1977) was an Iranian revolutionary and sociologist who focused on the sociology of religion. He is held as one of the most influential Iranian intellectuals of the 20th century and has been called the "ideologue of the Iranian Revolution", although his ideas did not end up forming the basis of the Islamic Republic.