Abu'l-Khayr Khan, also known as Bulgar Khan, was Khan of the Uzbek Khanate which united the nomadic Central Asian tribes.

The Shibanids or Shaybanids or more accurately the Abu'l-Khayrid-Shibanids, were a dynasty of Turko-Mongol origin, who ruled over most of modern-day Kazakhstan, much of Uzbekistan, and parts of southern Russia in the 15th century. They were the patrilineal descendants of Shiban, the fifth son of Jochi and grandson of Genghis Khan. Until the mid-14th century, they acknowledged the authority of the descendants of Shiban's brothers Batu Khan and Orda Khan, such as Öz Beg Khan. The Shaybanids originally led the gray horde southeast of the Urals, and converted to Islam in 1282. At its height, the Khanate included parts of modern-day Afghanistan and other parts of Central Asia.