Ayatollah Ahmad Jannati (Persian: ???? ?????, born 23 February 1927) is an Iranian Shi'i cleric and a conservative politician.
He was born in Ladan, Isfahan.
Jannati is known for his opposition of secularism and anti-LGBT rhetoric.
He is also a founding member of the Haghani school of thought.
Today, Jannati occupies two prominent posts in Iranian politics as chairman of the Assembly of Experts, the body charged with choosing the Supreme Leader, and as chairman of the Guardian Council, the body in charge of checking legislation approved by Majlis with the Constitution and sharia, and approving the candidates in various elections.