What was a govenor in the Persian empire known as?

A governor in the Persian Empire was known as a "satrap." Satraps were appointed to oversee various provinces, or satrapies, and were responsible for maintaining order, collecting taxes, and ensuring loyalty to the central authority of the king. They often had significant autonomy but were expected to report directly to the emperor. The system of satrapies helped to effectively manage the vast and diverse territories of the empire.