Qāghān Beg (Ghiyāth ad-Dīn Qāghān-Bīk, Ġiyāṯ ad-Dīn Qāġān-Bīk) was khan of the Golden Horde in 1375–1377. He held the traditional capital Sarai during a period of civil war among rival contenders for the throne. Throughout his reign, the westernmost portion of the Golden Hode was under the control of the beglerbeg Mamai and his puppet khan Muḥammad-Sulṭān, while the easternmost portion was under the control of Urus Khan and then his sons.
