Qi Empress (奇皇后; Mongolian: Öljei Khutugh Өлзий хутаг (完者忽都), Korean: 기황후) (1301–1369/70) was one of empresses of Toghun Temür Khan of the Yuan Dynasty and the mother of Ayushiridar.
Öljei Khutugh was born to Gi Ja-o (奇子敖) in Haengju (幸州), Goryeo Korea. She had an elder brother named Gi Cheol (奇轍). She became a concubine of Toghun Temür and mothered Ayurshiridar. After the primary empress Danashri was overthrown in 1340 because of the rebellion by her brother Tanggisi, Toghun Temür tried to install Öljei Khutugh as the empress. However Bayan, who held real power, opposed it. When Bayan was purged, Öljei Khutugh became the secondary empress in 1340 (the primary one was Bayan Khutugh of the Khunggirad clan). Her son Ayurshiridar was designated Crown Prince in 1353. Using her Korean eunuch Bak Bulhwa (朴不花) as her agent, she began a campaign to force the emperor to pass the imperial throne to her son Ayurshiridar. However her intententions became known to the emperor and he grew apart from her.
Depending on Öljei Khutugh's position in the imperial capital her brother Gi Cheol (Bayan Bukha) came to threaten the position of the king of Goryeo which was a client state of the Mongols.