Nyandomsky District is an administrative district (raion), one of the twenty-one in Arkhangelsk Oblast, Russia. As a municipal division, it is incorporated as Nyandomsky Municipal District. It is located in the southwest of the oblast and borders with Plesetsky District in the north and west, Shenkursky District in the east, Velsky District in the southeast, Konoshsky District in the south, and with Kargopolsky District in the southwest. The area of the district is . Its administrative center is the town of Nyandoma. Population: The population of Nyandoma accounts for 73.9% of the district's total population.