|Centre of sum:||Bayannuur , 120 km located from Ulgii.|
Bayannuur is a sum (district) of Bayan-Ulgii Province in western Mongolia. Bayannuur soum was established in 1938. 4623 people live in 959 households of Tsetseg, Bayannuur, Tsagaan-Aral, Shar Sekhee and Tsul Ulaan in the western part of the sea above 4000-4200 m above sea level. It is bordered by Tolbo, Altantsugts, Erdene and Khovd of Khovd aimag, and Umnugobi soum of Uvs province. Total land area is 233950 hectares.
In eastern part of Bayan-Ulgii province:
- 1750 km from Ulaanbaatar,
- Located 120 km from the province center