Grand Ayatollah Sheikh Mohammed Mohsen Razi (???? ???? ?? ??? ?? ???? ??? ???????? ??????) popularly known as Agha (Aqa) Bozorg Tehrani (Persian: ??? ???? ???????) (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 following famous books:
Az-Zaree'a ila Tasaneef ush-Shia (List of Shia Books) (26 volumes), the list was compiled in 1908
Tabaghat Aa'lam Al-Shia (List of Shia Ulema) (9 volumes)
Mosannafet-e Shi`e (6 volumes)