Leonas Koganas was a Lithuanian Jewish physician who served as Minister of Finance and became a member of the Communist Party of the Soviet Union in 1947.
After the occupation of Lithuania by the Soviet Union in June 1940, he became Minister of Health in the short-lived People's Government of Lithuania (it was a new ministry; before, there was only the Health Department under the Ministry of Internal Affairs). Moisiejus Leonas Koganas (February 20, 1894, Siauliai  May 30, 1956, Vilnius) was a Lithuanian Jewish doctor specializing in lung diseases, particularly tuberculosis. Ministry of Finance (Lithuania) 
