Ayatollah Sheikh Fazlollah bin Abbas Mazindarani (; 24 December 1843 – 31 July 1909), also known as Fazlollah Noori (), was a prominent Shia Muslim cleric in Qajar Iran during the late 19th and early 20th century and founder of political Islam in Iran. Despite his sympathy with the Iranian Constitutional Revolution in the beginning for its opposition to tyranny and rule of law, he soon turned against it upon realizing that the movement established a Western-style government with secular law rather than a government with Islamic law. He was executed for treason by Constitutionalists as a result; he was hanged before a crowd in Tobkhuneh square. Today he is considered a martyr (shahid) in the fight against democracy by Islamic conservatives in Iran.