Mohammad Reza Mahdavi Kani was an Iranian cleric, writer and conservative politician who was Acting Prime Minister of Iran from 2 September until 29 October 1981. Before that, he was Minister of Interior and Minister of Justice in the cabinets of Mohammad-Ali Rajai and Mohammad-Javad Bahonar. He was the leader of Combatant Clergy Association and Chairman of the Assembly of Experts and also founder and president of Imam Sadiq University.