Oktyabrsky (, known in 1951—1958 as Pervomaysky ), is an urban locality (an urban-type settlement) and the administrative center of Ustyansky District of Arkhangelsk Oblast, Russia, located on the left bank of the Ustya River. Municipally, it is the administrative center of Oktyabrskoye Urban Settlement, the only urban settlement in the district. Population:

It was founded in 1951 due to the construction of Shangalskaya timber logging camp. Until 1958, it was known as Pervomaysky. Both names are derived from the Soviet holidays: Pervomaysky refers to the May Day, whereas Oktyabrsky refers to the October Revolution.