The Tengger Desert or Tengri Desert (Mongolian: Тэнгэр цөл, Chinese: 腾格里沙漠; pinyin: Ténggélǐ Shāmò; lit. 'Sky Desert') is an arid natural region that covers about 36,700 km² and is mostly in the Inner Mongolia Autonomous Region in China.

The desert is expanding in size.