The Altai Uriankhai (Mongolian: Алтайн Урианхай, Altain Urianhai or Altai-yn Urianhai; simplified Chinese: 阿尔泰乌梁海; traditional Chinese: 阿爾泰烏梁海; pinyin: Ā'ěrtài Wūliánghǎi) refers to a Mongol tribe around the Altai Mountains that was organized by the Qing dynasty. They now form a subgroup in western Mongolia and eastern Xinjiang. In the mid 14th century, they lived in Liaoyang province of modern China. After the rebellion of the northern Uriankhai people, they were conquered by Dayan Khan in 1538 and mostly annexed by the northern Khalkha.