The Sultan of Selangor is the constitutional Ruler of Selangor. The role, powers and duties of the Sultan are set forth in the constitution of 1959. The constitution proclaims that the office of Sultan is vested with the executive power of the state, is the head of the religion of Islam in the state and the "fountain of honours and dignities" in the state.
This position is hereditary and can only be held by a member of Selangor's royal family. The current ruler is His Royal Highness Sultan Sharafuddin Idris Shah, who has held this position since 2001.