Oghul Qaimish

Oghul Qaimish (Mongolian: ᠤᠤᠭᠠᠯ ᠬᠠᠶᠢᠮᠢᠰᠢ, c. 1200s–1251) was the wife of Güyük Khan, the third ruler of the Mongol Empire, and was herself the nominal regent of the empire between Güyük's death in 1248 and the accession of Möngke Khan in 1251.

Oghul Qaimish was born into the Merkit tribe and married Güyük in the 1220s. She played little role in his political activities either before or during his time as khan. After his death, her rule was ineffective and confused, with her sons Khoja and Naqu often acting in opposition to her. Meanwhile, her political opponents Batu Khan and Sorghaghtani Beki comprehensively outmanoeuvred her by having Sorghaghtani's son Möngke elected as khan in 1250. After his accession, Oghul Qaimish was implicated in a failed coup attempt by Naqu—in retaliation to her refusal to submit, Möngke had her imprisoned, allegedly tortured and, after a show trial, executed.