Empress Gi (or Empress Ki; Hangul: 기황후; 1315–1369/70), known as Empress Qi (or Ch'i; 奇皇后) in Chinese and Öljei Khutuk (Өлзий хутуг) in Mongolian, was one of the primary empresses of Toghon Temür of the Yuan dynasty and the mother of Biligtü Khan. She was from a Goryeo, present-day Korea, aristocratic family.