Satrap

Satraps (/ˈsætrəp/) were the governors of the provinces of the ancient Median and Achaemenid Empires and in several of their successors, such as in the Sasanian Empire and the Hellenistic empires.[2] The satrap served as viceroy to the king, though with considerable autonomy. The word came to suggest tyranny or ostentatious splendour.[3][4]

The Herakleia head, probable portrait of an Achaemenid Empire Satrap of Asia Minor, end of 6th century BCE, probably under Darius I[1]

A satrapy is the territory governed by a satrap.[5]