ダヤン・ハーン
Mandukhai Khatun (, ᠮᠠᠨᠳᠤᠬᠠᠢ ᠰᠡᠴᠡᠨ ᠬᠠᠲᠤᠨ), also known as Mandukhai Sechen Khatun (, , ) (c. 1449 – 1510) was a Khatun (queen) of the Mongolia based in the Mongolian Plateau. With her second husband Batmunkh Dayan Khan, she helped reunite the warring Mongols.