Alchagir (1455-1519) was Bey of the Nogai Horde from 1510 to 1516, interrupting Sheikh Muhammad's reigns. A son of Musa Bey, he battled his brother Sheikh Muhammad for control of the horde and ousted him from power in 1510 with the aid of the Bashkirs. He was overthrown by Sheikh Muhammad in 1516 and went into exile in the Crimean Khanate until his brother allied with the Crimeans. Alchagir died in a skirmish with the Kazakhs in 1519.