Georgy (Yury) Leonidovich Pyatakov (Russian: Георгий Леонидович Пятаков; August 6, 1890 – January 30, 1937) was a Bolshevik revolutionary leader during the Russian Revolution, and member of the Left Opposition.Pyatakov (party pseudonyms: Kievsky, Lyalin, Petro, Yaponets) was born August 6, 1890 in the settlement of the Mariinsky sugar factory which was owned by his father, an ethnic Russian, Leonid Timofeyevich Pyatakov.He started political activity as an anarchist while he was in secondary school, but joined the Russian Social Democratic Labour Party in 1910.