Mazaces, also Mazakes (Old Iranian: Mazdāka, Aramaic: 𐡌𐡆𐡃𐡊 MZDK), was the last Achaemenid satrap of ancient Egypt during the late reign of Darius III of the 31st Dynasty of Egypt.

[2] His office lasted less than a year: when Alexander the Great invaded Egypt in late 332 BCE, Mazaces did not have enough military force to put up a resistance.

Counselled by Amminapes, who knew Alexander well, Mazaces handed the country to the Macedonian without a fight, along with a treasure of 800 talents of gold.

[3][4] It is unknown what happened to Mazaces after this event, but Alexander assigned the role of satrap of Egypt to the Greek Cleomenes of Naucratis before leaving for the East.

[5] Mazakes may have been nominated as satrap of Mesopotamia in reward for his submission, as coins in his name and in a style similar to his Egyptian predecessor Sabakes, are found in this region, and the satrap of Mesopotamia at that time is otherwise unknown.