Sayyid Mohammad Kazem Shariatmadari (Persian: محمد کاظم شریعتمداری‎), also spelled Shariat-Madari (5 January 1906 – 3 April 1986), was an Iranian Grand Ayatollah. He favoured the traditional Shiite practice of keeping clerics away from governmental positions and was a critic of Supreme Leader Ruhollah Khomeini, denouncing the taking hostage of diplomats at the US embassy in Tehran. In 1982 he was accused of being part of a plot to bomb Khomeini's home and to overthrow the Islamic republic, and he remained under house arrest until his death in 1986. His followers also opposed Ruhollah Khomeini.