Mazaeus (died 328 BCE) was a Persian noble and governor of Babylon.
He was the second to last satrap (governor) of Cilicia. Shortly aftwards, his successor was expelled by Alexander the Great.
At the Battle of Gaugamela Mazaeus commanded the right flank with the Syrian, Median, Mesopotamian, Parthian, Sacian, Tapurian, Hyrcanian, Albanian, Sacesinian, Cappadocian, and Armenian cavalry.
Stateira II was originally bethrothed to him, but he died too early. She was eventually married to Alexander.
It is thought that the Alexander Sarcophagus was actually dedicated to him.