The Capitan Grande Reservation is a Kumeyaay Indian reservation in San Diego County, California, jointly controlled by the Barona Group of Capitan Grande Band of Mission Indians and Viejas Group of Capitan Grande Band of Mission Indians. The reservation is uninhabited and is 15,753 acres (63.75 km2) large, located in the Cuyamaca Mountains and middle of the Cleveland National Forest and west of Cuyamaca Peak. The closest town is Alpine, California.