Alag-Erdene (Mongolian: Алаг-Эрдэнэ, lit. "variegated gem") is a sum (district) of Khövsgöl aimag (province). The area is about 4,500 km², of which 1,460 km² are forest, and 2,760 km² are pasture. In 2005, the sum had 2992 inhabitants, including some Darkhad, Khotogoid, and Uriankhai.