Politics of Japan are conducted in a framework of a dominant-party bicameral parliamentary constitutional monarchy, in which the Emperor is the head of state and the Prime Minister is the head of government and the head of the Cabinet, which directs the executive branch.

The Cabinet of Japan is the chief executive body of the government of Japan. It consists of the prime minister, who is appointed by the emperor after being nominated by the National Diet, in addition to up to nineteen other members, called ministers of state.