The Austrian State Treaty (German: ) or Austrian Independence Treaty re-established Austria as a sovereign state. It was signed on May 15, 1955, in Vienna at the Schloss Belvedere among the Allied occupying powers (France, the United Kingdom, the United States, and the Soviet Union) and the Austrian government. It officially came into force on July 27, 1955. Its full title is "Treaty for the re-establishment of an independent and democratic Austria, signed in Vienna on the 15 May 1955" ().