Württemberg-Baden is a former state of Federal Republic of Germany. It was created in 1945 by the United States occupation forces, after the previous states of Baden and Württemberg had been split up between the US and French occupation zones. Its capital was Stuttgart. In 1952, Württemberg-Baden merged with Württemberg-Hohenzollern and Baden into the present state of Baden-Württemberg.
Württemberg-Baden consisted of the northern halves of the former states of Württemberg and Baden. The southern border of this part of the US-administered zone was set so that the autobahn connecting Karlsruhe and Munich (today the A8) was completely contained within the American zone. The three major subdivisions of the American zone (Greater Hesse, Bavaria and Württemberg-Baden) were declared on 19 September 1945.
On 24 November 1946, a new constitution was enacted and Württemberg-Baden's first parliament was elected. On 23 May 1949, the state became a founding member of the Federal Republic of Germany.