Krasnoborsky District (Russian: Краснобо́рский райо́н) is an administrative district (raion), one of the twenty-one in Arkhangelsk Oblast, Russia. Municipally, it is incorporated as Krasnoborsky Municipal District. It is located in the southeast of the oblast and borders with Verkhnetoyemsky District in the north, Udorsky District of the Komi Republic in the northeast, Lensky District in the east, Kotlassky District in the south, and with Ustyansky District in the west. Its administrative center is the rural locality (a selo) of Krasnoborsk. District's population: 13,815 (2010 Census); 17,144 (2002 Census); 20,491 (1989 Census). The population of Krasnoborsk accounts for 34.5% of the district's total population.