Politics of Malaysia takes place in the framework of a federal representative democratic constitutional monarchy, in which the Yang di-Pertuan Agong is head of state and the Prime Minister of Malaysia is the head of government. Executive power is exercised by the federal government and the 13 state governments. Legislative power is vested in the federal parliament and the 13 state assemblies. The judiciary is independent of the executive and the legislature, though the executive maintains a certain level of influence in the appointment of judges to the courts.

The Federal Constitution of Malaysia, which came into force in 1957 as the Constitution of the Federation of Malaya and was amended in 1963 to form the Constitution of Malaysia, is the supreme law of Malaysia and contains a total of 183 articles. It is a written legal document influenced by two previous documents, the Federation of Malaya Agreement 1948 and the Independence Constitution of 1957. The Federation was initially called the Federation of Malaya and it adopted its present name, Malaysia, when the states of Sabah, Sarawak and Singapore became part of the Federation. The Constitution establishes the Federation as a constitutional monarchy, having the Yang di-Pertuan Agong as the Head of State with largely ceremonial roles. It provides for the establishment and organisation of three main branches of the government: the bicameral legislative branch called the Parliament, which consists of the House of Representatives and the Senate ; the executive branch led by the Prime Minister and his Cabinet Ministers and the judicial branch headed by the Federal Court.