Konstanti Kakhay or Konstanti Kakhi (Georgian: კონსტანტი კახაჲ; კონსტანტი კახი) (768 – November 10, 853) was a Christian Georgian nobleman from Kartli, who was seized captive by the Abbasid general Bugha al-Kabir during his 853 expedition into the Caucasus. He was subsequently put to death, at the age of 85, for refusing to convert to Islam. This made Kostanti a subject of the contemporaneous hagiography and a saint of the Georgian Orthodox Church.