Zaozyorsk is a closed town located in the Murmansk Oblast of Russia. It has been known by several previous names throughout its history, including Zaozyorny, Severomorsk-7, and Murmansk-150.
According to census data from 2010, the town had a population of 11,199 residents. This figure represented a decrease from the 12,687 people recorded during the 2002 Census.