The Selawik River is a stream, 140 miles (230 km) long, in the northwestern part of the U.S. state of Alaska. Originating in the Purcell Mountains near the Zane Hills, it flows generally west through the Selawik National Wildlife Refuge to Selawik Lake, which empties into the Kotzebue Sound in the Chukchi Sea. The river is approximately at the latitude of the Arctic Circle.