One of Kazakh khans of XVIII century. The year of birth is unknown. Approximate date of death February-march of 1750. Sygay khan was the eldest son of Barak sultan, grandson of Tursun khan. He was from Djadik dynasty (Erofeeva, 1997: 118). In historical recods sometimes Shigay, Sygay (Erofeeva, 2001: 121). Sygay was well-known amongst Kazakhs, Kalmyks and Bashkirs. In 1738 at the age of 12, he was invited to Bashkortostan and elected to be khan. That’s the same time Ural Bashkirs rebelled against Russian Empire. Sygay stayed at Bashkortostan not too long, soon he returned to native land. Karasakal, Bashkir ruler, was repeatedly supported by Barak and his sons (KAZAKH KHANS 2015: 84–85). In 1744, Sygay’s father orderd to send him to Dzungaria as a hostage. He entered into relation with Galdan Tseren’s wife and came across with hatred of her son Tsevan-DorjiAdji-Namjil, successor of Dzungarian throne. In 1745, Kazakh people returned Sygay back. After returning to khanate, he migrated together with his fire to the north Kazakhstan for a while. In august 1748, he took part with his father in attack against Abulkhair khan (Erofeeva, 1997: 118). Later, Sygay and Barak migrated to the south Kazakhstan. In 1750, Sygay khan himself and his father were poisoned in Karnak city. It is possible that it was organized by Dzungarian Khong Tayiji Adji-Namjil or Andjan sarts. Presumably, Abulkhair sons were involved in Barak and his sons’ death (KAZAKH KHANS 2015: 84–85).