The Kuloy (Кулой) is a river in Pinezhsky and Mezensky Districts of Arkhangelsk Oblast in Russia.

The area was populated by Finno-Ugric peoples and then colonized by the Novgorod Republic.

The Kuloy was used by Novgorod merchants as the trading route to the basin of the Pechora.

From the Northern Dvina, they went upstream the Pinega and took the boats by land to the Kuloy at the place where the canal now is.

[3] The selo of Dolgoshchelye, in the estuary of the Kuloy, is a historical pomor fishermen village.