大日本帝國憲法
The Meiji Constitution was the fundamental law of the Empire of Japan, propagated during the reign of Emperor Meiji (). It provided for a form of mixed constitutional and absolute monarchy, based on the Prussian and British models. In theory, the Emperor of Japan was the supreme leader, and the cabinet, whose prime minister was elected by a privy council, were his followers; in practice, the Emperor was head of state but the Prime Minister was the actual head of government. Under the Meiji Constitution, the prime minister and his cabinet were not necessarily chosen from the elected members of the Diet. Pursuing the regular amending procedure of the "Meiji Constitution", it was entirely revised to become the "Post-war Constitution" on 3 November 1946. The Post-war Constitution has been in force since 3 May 1947.