Sosnovy Bor (, lit. pine forest) is a town in Leningrad Oblast, Russia, situated on the Koporye Bay of the Gulf of Finland, west of St. Petersburg. The town of Sosnovy Bor is surrounded by Lomonosovsky District. Population:

It was founded in 1958 as urban-type settlement serving the Leningrad Nuclear Power Plant and granted urban-settlement status on December 10, 1958. At the time, it was a part of Lomonosovsky District of Leningrad Oblast. On April 19, 1973, Sosnovy Bor was granted town status and became a town of oblast significance, which is it was not a part of Lomonosovsky District anymore.