Lazar Iosifovich Kogan (Russian: Ла́зарь Ио́сифович Ко́ган; November 7, 1889 – March 3, 1939) was a Soviet secret police (Cheka, OGPU, NKVD) high-ranking functionary,[1] chief of the Gulag (1930–1932) and deputy chief of the Gulag (1932–1936).
Born in Elovka, Krasnoyarsk Krai, in the Yeniseysk Governorate of the Russian Empire,
he was the son of a wealthy Jewish merchant. His father was a fur trader. An active participant in the revolutionary movement, at first, an anarcho-communist. In 1908, a Kiev Military District court sentenced him to death for participating in looting with a gun in his hand. This punishment was then converted into a life sentence.