Tsagaannuur (Mongolian: Цагааннуур = white lake) is a sum of Khövsgöl aimag. The area is 5,410 km2. In 2000, Tsagaannuur had a population of 1,317 people, of which most identified themselves as Darkhad. There were 269 inhabitants who identified themselves as Tsaatan ethnicity. The sum center, officially named Gurvansaikhan (Mongolian: Гурвансайхан), is located at the shore of Dood Tsagaan nuur, 279 km north-north-east of Mörön and 1048 km from Ulaanbaatar.
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