Independent republic of central Europe, bounded on the north by Germany and Czechoslovakia, east by Czechoslovakia and Hungary, south by Italy and Yugoslavia, west by Switzerland. Since 1919 Austria comprises only the German-speaking provinces of the former Austro-Hungarian monarchy. Austria was included in the Roman provinces of Rhaetia, Noricum, and Pannonia, and received Christianity with Roman civilization, but after the fall of the Empire was overrun by wild Slavonic tribes. Reestablished in the 10th century as the East Realm or Osterreich of the Holy Roman Empire, it was closely associated with Bavaria and converted to Christianity by Saint Rupert of Worms. Catholicism is the official religion, endowed by the state, but freedom of worship for all is secured by the Treaty of Saint Germain, 1919.

Archdioceses:

Dioceses:

Other ecclesiastical divisions:

See also: