West Kameng district is a district of Arunachal Pradesh in northeastern India. It accounts for 8.86% of the total area of the state. The name is derived from the Kameng river, a tributary of the Brahm

The Kameng River in the eastern Himalayan mountains, originates in Tawang district from the glacial lake below snow-capped Gori Chen mountain 27°48′36″N 92°26′38″E / 27.81000°N 92.44389°E / 27.81000;