Guyuk (or Kuyuk; 1206-1248) was the third Great Khan of the Mongol Empire. He was the eldest son of Ogedei Khan; grandson of Genghis Khan; and reigned from 1246 to 1248.

Guyuk; the eldest son of Ugedei;was born in 1206;the red tiger year. He was elevated to the throne in1246. One of his many important measures was the first registration of the Mongolian population. In the field of foreign policy he followed his father and continued to conquer many other countries. Guyuk Khan passed away in 1248; the yellow monkey year.