Mithridates or Mithradates (Greek: Mιθριδάτης or Mιθραδάτης) was a Persian noble. His wife was the daughter of Darius III with the sister of Pharnaces, which makes him son-in-law of Darius. He was slain by Alexander the Great with his own hand, at the Battle of the Granicus in 334 BC, when he plunged his lance through Mithridates' face.