Tosno is a town and the administrative center of Tosnensky District in Leningrad Oblast, Russia, located on the Tosna River, southeast of the center of St. Petersburg. Population:

The village of Tosno was first mentioned in Russian chronicles in 1500. It was a part of Vodskaya Pyatina, one of the five pyatinas into which Novgorod Lands were divided. In the course of the administrative reform carried out in 1708 by Peter the Great, Tosno was included into Ingermanland Governorate (known since 1710 as St. Petersburg Governorate). Its development in the 18th and 19th centuries was mainly due to its geographic location on the road between the two Russian capitals. From 1774, it was a station at the yam route. In 1849, the railway connecting Tosno with St. Petersburg and Chudovo opened. In the 19th century, Tosno was a part of Sankt-Peterburgsky Uyezd (renamed in 1913 Petrogradsky Uyezd and in 1924 Leningradsky Uyezd; the governorate was accordingly renamed Petrogradsky in 1913 and Leningradsky in 1924).