The monarchies of Malaysia refer to the constitutional monarchy system as practised in Malaysia. The political system of Malaysia is based on the Westminster parliamentary system with the features of a federation.

Nine of the states of Malaysia are constitutionally headed by traditional Malay rulers. The nine states are collectively referred to as the Malay States. State constitutions limit eligibility for the thrones to male Malay Muslim of royal descent. Seven are hereditary monarchies based on agnatic primogeniture; they are Kedah, Kelantan, Johor, Perlis, Pahang, Selangor and Terengganu. In Perak, the throne rotates among three branches of the royal family loosely based on agnatic seniority. One state, Negeri Sembilan, is an elective monarchy; the ruler is elected from male members of the royal family by hereditary chiefs. All rulers except those of Perlis and Negeri Sembilan use the title Sultan. The ruler of Perlis is styled Raja, while the ruler of Negeri Sembilan is known as Yang Di Pertuan Besar.