Ulaankhus (Mongolian: Улаанхус, Red birch) is a sum (district) of Bayan-Ölgii Province in western Mongolia.

[1] Historically, Ulaankhus was settled by Kazakhs who moved to the northern side of the Altai Mountains.

[2] Ulaankhus sum borders the Altai Republic of Russia to the north, Tsagaannuur to the northeast, Bugat to the east, Sagsai to the southeast, Altay Prefecture of Xinjiang, China to the southwest, and Tsengel to the west.

The sum is covered by hills and mountains, with 90% of the area lying at altitudes above 2,500 metres (8,200 ft).

[4] The district is divided into 11 bags, which are:[5] Bilüü contains the Nurbergen Supermarket, a branch of the Khan Bank, a small stadium, a hotel,[4] a school and a hospital.