Mandukhai Khatun (also known as Mandukhai Sechen Khatun or Queen Manduhai the Wise) (c. 1449 - c. 1510) was the Empress of the Mongolian Khaganate or Northern Yuan Dynasty. After the death of Mandukhai's husband Manduul in 1467, the throne was left without an heir. Mandukhai adopted the 5 year old orphan Batmonkh, son of Bayanmonhe Jinong who had recently died in flight. He was the last living descendant of Kublai Khan and she had him proclaimed Dayan Khan, retaining power herself as regent.