Aleksandr Stepanovich Antonov (1888–1922) (Russian: Алекса́ндр Степа́нович Анто́нов) was a member of the Socialist-Revolutionary Party, who later became one of the leaders of the Tambov Rebellion against the Soviet regime. Antonov was born in Moscow, but grew up in a much smaller town of Kirsanov. Later he studied in the Tambov Real Institute (Realnoe Uchilische) until he was expelled for revolutionary proclamations. He was afraid to return home after that and found a job as an apprentice in the local train construction plant. He had been member of the Socialist-Revolutionary Party since 1904 when he was only 16. His fellow party members included the famous Maria Spiridonova, Yuriy Podbelskiy, and several others. Taking example from his party protégés, he joined them in their terrorist activities, actions that included assassinations, robberies, and other sorts of expropriation. Soon he was arrested and put on trial for the robbery of a postal train wagon, which carried all kinds of valuables. Antonov was given 20 years of katorga spending them first in the Schlisselburg fortress and then in Vladimirsky Central.