Stanislav Vikentyevich Kosior, sometimes spelled Kossior (Russian: Станисла́в Вике́нтьевич Косио́р, Ukrainian: Станіслав Вікентійович Косіор, Polish: Stanisław Kosior) (18 November [O.S. 6 November] 1889 – 26 February 1939) was one of three Kosior brothers, Polish-born Soviet politicians. He was General Secretary of the Ukrainian Communist Party, deputy prime minister of the USSR and member of the Politburo of the Communist Party of the Soviet Union (CPSU). He is considered one of the principal architects of the Ukrainian famine of 1932 to 1933, known as the Holodomor in Ukraine. He was executed during the Great Purge.