Тосненский район
On August 19, 1936 Slutsky District was established. It included some areas from abolished Leningradsky Prigorodny District and from Tosnensky District. On June 23, 1939 parts of Krasnogvardeysky District were transferred to Slutsky District. On April 23, 1944 Slutsk was renamed Pavlovsk, and the district was renamed Pavlovsky. On July 25, 1953 Pavlovsky District was abolished and split between the city of Leningrad, Gatchinsky, and Tosnensky Districts.