Agha Bozorg Tehrani
Grand Ayatollah Sheikh Mohammed Mohsen Razi (محمد محسن بن علي بن محمد رضا الطهراني النجفي), popularly known as Agha (Aqa) Bozorg Tehrani () (11 Rabi-I 1293 – 13 Zul-Hijjah 1389 AH /7 April 1876 – 20 February 1970), was born in Tehran. He was a Shia marja from Hawza Elmiye Najaf. He was the teacher of Grand Ayatollah Ali Hussaini Sistani, Grand Ayatollah Muhammad Hussain Najafi, and many others. He wrote, among others, the following notable books: