The People's Justice Party ; often known simply as KEADILAN or PKR, is a reformist political party in Malaysia formed on 3 August 2003 through a merger of the party's predecessor, the National Justice Party, with the socialist Malaysian People's Party. The party's predecessor was founded by Wan Azizah Wan Ismail during the height of the Reformasi movement on 4 April 1999 after the arrest of her husband, former Deputy Prime Minister Anwar Ibrahim. The party is one of main partners of the Pakatan Harapan (PH) coalition.

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.