Uvs Lake (Mongolian: Увс нуур; Tyvan: Успа-Хөл) is a highly saline lake in an endorheic basin - Uvs Nuur Basin in Mongolia with a small part in Russia. It is the largest lake in Mongolia by surface area, covering 3,350 km² at 759 m above sea level. The northeastern tip of the lake is situated in the Tuva Republic of the Russian Federation. The largest settlement near the lake is Ulaangom.