Luntai County, also known as Bugur County or Bügür County, is a county located in the central region of the Xinjiang Uyghur Autonomous Region in China. It falls under the administration of the Bayin'gholin Mongol Autonomous Prefecture.
The county covers a total area of 14,189 square kilometers (5,478 square miles). According to data from the 2002 census, Luntai County has a population of approximately 90,000 residents.