Ayatollah Sayyid Muhammad-Kadhim al-Husayni al-Modarresi (Persian: محمد كاظم حسينى مدرسى; Arabic: محمد كاظم الحسيني المدرسي; 1911–April 5, 1994) was an Iranian-Iraqi Shia scholar and mystic. He was a prominent teacher at the seminaries of Mashhad and Karbala, teaching Islamic philosophy. He held the Quranic exegesis chair of the Karbala seminary and taught aqaed in the al-Hindiya and al-Badkubeh schools. al-Modarresi was constantly in pursuit of spiritual self-discipline by means of self-reflection and other ascetic, religious and ethical practices.