Qurchaquz Buyruk Khan (Chinese: 忽兒察忽思不亦魯黑汗; pinyin: Hūercháhūsī Bùyìlǔhēi Hàn[1]) was a 12th-century Nestorian leader of Keraites.
Center was Karabalgasun, while Toghrul ruled western part of the khanate as a subordinate to his uncle Gurkhan.
His other sons Tai Temür Taishi and Yulamacus (as his subordinate) respectively granted Karaa and Boroo river banks, on the east.
[9] He was married to a certain woman called Ilma who bore him Toghrul and Töre Qaimish, a daughter of Naiman ruler Betegin Oba Kötürchi Buyruq Khan.
Through his granddaughter Sorghaghtani Beki, he became ancestor of Toluids - rulers of Ilkhanate and Yuan dynasty.