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Kotlas (Russian: Ко́тлас) is a town in Arkhangelsk Oblast, Russia, located at the confluence of the Northern Dvina and Vychegda Rivers. Population: 60,562 (2010 Census); 60,647 (2002 Census); 68,021 (1989 Census).Kotlas is the third largest town of Arkhangelsk Oblast in terms of population (after Arkhangelsk and Severodvinsk) and an important transport hub.

Kotlassky District (Russian: Ко́тласский райо́н) is an administrative district (raion), one of the twenty-one in Arkhangelsk Oblast, Russia. As a municipal division, it is incorporated as Kotlassky Municipal District. It is located in the southeast of the oblast and borders with Krasnoborsky District in the north, Lensky District in the northeast, Vilegodsky District in the east, Luzsky District of Kirov Oblast and Velikoustyugsky District of Vologda Oblast in the south, and with Ustyansky District in the west.

Verkhnetoyemsky District (Russian: Верхнето́емский райо́н) is an administrative district (raion), one of the twenty-one in Arkhangelsk Oblast, Russia. Municipally, it is incorporated as Verkhnetoyemsky Municipal District. It is located in the southeast of the oblast and borders with Pinezhsky District in the north, Udorsky District of the Komi Republic in the east, Krasnoborsky and Ustyansky Districts in the south, Shenkursky District in the west, and with Vinogradovsky District in the northwest.