Mezensky District is an administrative district (raion), one of the twenty-one in Arkhangelsk Oblast, Russia. As a municipal division, it is incorporated as Mezensky Municipal District. It is located in the northeast of the oblast and borders with Nenets Autonomous Okrug in the northeast, Ust-Tsilemsky District of the Komi Republic in the east, Leshukonsky and Pinezhsky Districts in the south, and with Primorsky District in the southwest. From the north, the district borders the White Sea. The area of the district is 34,400 square kilometers (13,300 sq mi). Its administrative center is the town of Mezen. Population: 10,330 (2010 Russian census); 13,124 (2002 Census); 17,796 (1989 Soviet census). The population of Mezen accounts for 34.6% of the total district's population.

Leshukonsky District is an administrative district (raion), one of the twenty-one in Arkhangelsk Oblast, Russia. Municipally, it is incorporated as Leshukonsky Municipal District. It is located in the northeast of the oblast and borders with Mezensky District in the north, Ust-Tsilemsky District of the Komi Republic in the east, Udorsky District of the Komi Republic in the south, and with Pinezhsky District in the west. Its administrative center is the rural locality of Leshukonskoye. District's population: 7,979 (2010 Russian census); 10,708 (2002 Census); 15,488 (1989 Soviet census). The population of Leshukonskoye accounts for 55.2% of the district's population.