أبو القاسم الخوئي
Grand Ayatollah Sayyid Muhammad-Sadiq Husayni Rohani (; b. 1926) is an Iranian Shia marja'.Rohani currently resides in Qom. He claims to have gained ijtihad from the grand Ayatollah Abu al-Qasim al-Khoei, at the age of 15. He announced his marja'iyya after the death of grand Ayatollah Hossein Borujerdi, at the age of 35.