Severomorsk (Северомо́рск) is a closed town in Murmansk Oblast, Russia, located about north of Murmansk along the Kola Bay. This is the main administrative base of the Russian Northern Fleet. Severomorsk has the largest dry dock in the Kola Peninsula.
It was founded in the second half of the 19th century as Vayenga settlement. The settlement was renamed Severomorsk when it was granted town status in 1951.