Abu al-Qasim al-Khoei, Iranian religious leader and scholar (b. 1899)
Grand Ayatollah Sayyid Abu al-Qasim al-Musawi al-Khoei ( (listen) AH-boo al KAH-sim al KHOO-ee; Arabic: أبو القاسم الموسوي الخوئي; Persian: ابوالقاسم موسوی خویی; November 19, 1899 – August 8, 1992) was an Iranian-Iraqi Shia marja'. Al-Khoei is considered one of the most influential twelver scholars.

After the death of Muhsin al-Hakim, he became the spiritual leader of much of the Shia world until his death in 1992. He was succeeded briefly by Abd al-A'la al-Sabziwari, until his death in 1993. Then his former student, Ali al-Sistani, took leadership of the seminary, whereby many of his followers became followers of al-Sistani.