Ashina (;
Middle Chinese: (
Guangyun) ), also spelled Asen, Asena, or Açina, was a tribe and the ruling dynasty of the ancient
Turks who rose to prominence in the mid-6th century when their leader,
Bumin Khan, revolted against the
Rouran. The two main branches of the family, one descended from Bumin and the other from his brother
Istemi, ruled over the eastern and western parts of the
Göktürk empire, respectively.