Empress Gi or Empress Ki, also known as Empress Qi or Öljei Khutuk, was a Goryeo-born empress consort of the Yuan dynasty. She was one of the primary empresses of Toghon Temür, and the mother of Biligtü Khan, who would become an emperor of the Northern Yuan dynasty. Gi was originally from an aristocratic family of the Goryeo dynasty, and first served as a concubine of Toghon Temür. During the last years of the Yuan dynasty, she became one of its most powerful women and political figures, controlling the country economically and politically, and ruling with de facto imperial powers.