Mazaeus or Mazday (Aramaic: 𐡌𐡆𐡃𐡉 MZDY, Greek: Μαζαῖος Mazaios)[1] (died 328 BC) was an Achaemenid Persian noble, satrap (a type of governor) of Cilicia and later satrap of Babylon for the Achaemenid Empire. He retained the satrapy after Babylon was under the rule of Alexander the Great.[2]
As a reward for his recognition of Alexander as the legitimate successor of Darius, Mazaeus was rewarded by being able to retain the satrapy of Babylon, as a Hellenistic satrap.[2] Alexander left a Macedonian, Apollodorus of Amphipolis, as the military commander of the garrison of Babylon, and another as tax-collector.[2] Mazaeus continued minting coins under his name, and later without his name.
The daughter of the Persian king Darius III, Stateira II, was originally betrothed to him, but he died before they could be married. She was eventually married to Alexander.