Presuming you mean a province (Satrapy), the provincial governors were called a Satrap, appointed by the king.
Cyrus and Darius the Great both ruled over the Persian Empire
satrapies
King Darius I created the Royal Road and reorganized the Persian Empire into satrapies ruled by a satrap.
He organised it into 20 provinces ruled by his provincial governors, supervised by the king and his council.
A Persian Empire existed in various forms from ancient times until the early twentieth century when it was renamed the Empire of Iran. The Empire of Iran was replaced with the Islamic Republic of Iran in 1979. At it's greatest extent the Persian Empire under Darius the Great ruled all of modern Iran, Afghanistan, Iraq, Syria and Turkey.
The Persian Empire.
Persian.
There were 20 Satraps (provincial governors responsible to the king and his council).
Cyrus and Darius the Great both ruled over the Persian Empire
Darius I ruled Persia (The Persian Empire) in the 5th century BC.
The people within the Persian Empire which he ruled.
satrapies
King Darius I created the Royal Road and reorganized the Persian Empire into satrapies ruled by a satrap.
Cyrus and Darius the Great both ruled over the Persian Empire
King Darius I ruled the Persian Empire from 552 BCE to 486 BCE.
Cyrus , Darius , et.al. ~ look to the related link below .
Twenty provinces (Satrapies).