Chinqai (Chinese: 鎮海, 1169–1252), also known by his Sinicized name Tian Zhenhai (Chinese: 田鎮海), was a Mongol statesman, scholar and politician in early Mongol Empire. He was a Nestorian and his ethnic origin was Kereit according to the History of Yuan, Uyghur according to Ata Malik Juvayni's Tarīkh-i Jahān-gushā (History of the World Conqueror),[1] though some also argued that he could be an Öngüd.[2]