Mithridates or Mithradates () was a Persian noble. His wife was the daughter of Darius III with the sister of Pharnaces, which made him the son-in-law of Darius. He was slain by the hand of Alexander the Great himself, at the Battle of the Granicus (modern-day Turkey) in 334 BC, when Alexander plunged his lance through Mithridates' face.