The Colville Indian Reservation is an Indian reservation in the north-central part of the U.S. state of Washington, inhabited and managed by the Confederated Tribes of the Colville Reservation, which is federally recognized. The reservation is located primarily in the southeastern section of Okanogan County and the southern half of Ferry County, but it includes other pieces of trust land in eastern Washington, including in Chelan County, just to the northwest of the city of Chelan.