Aju (or Achu) (1227–1287) was a general and chancellor of the Mongol Empire and the Yuan Dynasty. He was from the Jarchud clan of the Mongol Uriankhai. His grandfather was Subutai, the honored general and Noyan of Genghis Khan; his father was Uryankhadai. In 1253 he followed his father and subdued western Chinese people and conquered the Kingdom of Dali. Uryankhadai and Aju led 3,000 Mongols and more than 10,000 troops from Dali tribes to northern Vietnam in 1255. The king of the Trần Dynasty agreed to send tribute after his defeat in open battle; this lasted until the reign of Kublai.