The politics of Papua New Guinea takes place in a framework of a parliamentary representative democratic multi-party system, whereby the prime minister is the head of government. Papua New Guinea is an independent Commonwealth realm, with the monarch serving as head of state and a governor-general, nominated by the National Parliament, serving as their representative. Executive power is exercised by the government. Legislative power is vested in both the government and parliament.

The National Parliament of Papua New Guinea is the unicameral national legislature in Papua New Guinea. It was created in 1964 as the House of Assembly of Papua and New Guinea but gained its current name after the nation was granted independence in 1975.