The Mongolian Plateau is the part of the Central Asian Plateau lying between 87°40′-122°15′N and 37°46′-53°08′E and having an area of approximately 2,600,000 square kilometres (1,000,000 sq mi). It is bounded by the Greater Hinggan Mountains in the east, the Yin Mountains to the south, the Altai Mountains to the west, and the Sayan and Khentii mountains to the north. The plateau includes the Gobi Desert as well as dry steppe regions. It has an elevation of roughly 1,000 to 1,500 meters, with the lowest point in Hulunbuir and the highest point in Altai.
Politically, the plateau is divided between Mongolia, China and Russia. In China, parts of the Inner Mongolia and Xinjiang autonomous regions lie on the plateau. In Russia, the plateau forms part of Buryatia and the southern Irkutsk Oblast.