The Constitution of the German Reich (German: Die Verfassung des Deutschen Reichs), usually known as the Weimar Constitution (Weimarer Verfassung), was the constitution that governed Germany during the Weimar Republic era. The constitution created a federal semi-presidential republic with a parliament whose lower house, the Reichstag, was elected by universal suffrage using proportional representation. The appointed upper house, the Reichsrat, represented the interests of the federal states. The president of Germany had supreme command over the military, extensive emergency powers, and appointed and removed the chancellor, who was responsible to the Reichstag. The constitution included a significant number of civic rights such as freedom of speech and habeas corpus. It guaranteed freedom of religion and did not permit the establishment of a state church.
The constitution contained a number of weaknesses which, under the difficult conditions of the interwar period, failed to prevent Adolf Hitler from setting up a Nazi dictatorship using the constitution as a cover of legitimacy. Although it was de facto set aside by the Enabling Act of 1933, the constitution remained legal-technically in effect throughout the Nazi era from 1933 to 1945 and also during the Allied occupation of Germany from 1945 to 1949. It was then replaced by the Basic Law for the Federal Republic of Germany (West Germany until 1990, then reunited Germany) and the Constitution of the German Democratic Republic (East Germany).