Aleksandr Iosifovich Popov (Russian: Алекса́ндр Ио́сифович Попо́в; 7 June 1913 in Dorpat, Governorate of Livonia, Russian Empire – 23 April 1993 in Moscow, Russia) was a Soviet permafrost researcher at the Moscow State University. He served as head of the Department of Cryolithology and Glaciology.[1] Popov was a member of the International Commission on Periglacial Morphology of the International Geographical Union. He organized and led numerous expeditions to investigate permafrost and deep seasonal freezing in the Soviet Union.[2] Popov edited the geocryological map of the Soviet Union that was published in 1986.[3]