Grand Ayatollah Seyed Mohammad Ali Hosseini Alavi Gorgani (Persian: سيد محمد على حسينى علوى گرگانى) (born 1922) is an Iranian Twelver shi'a marja. He was born in a religious family in Golestan, Iran. He rose to a leading scholar in Najaf, and moved to Qom in 1979. Ayatollah Alavi Gorgani studied under the late Ayatollah Bourujerdi.
Grand Ayatollah Alavi Gorgani is a leading critic of Khamenei and has repeatedly questioned his clerical credentials.