Uliastai (Mongolian: Улиастай; ᠣᠯᠢᠶᠠᠰᠦᠲᠠᠢ) is a city in Mongolia. It is located in the western part of the country, 1,115 kilometers from the capital Ulaanbaatar. Uliastai is the capital of Zavkhan Province and was the 10th most populous city in the country with a population of 24,276 (2000 census), now this city has 16,240 population (2006 est.) and is at 16th position.