War of the Babenberg Succession

The War of the Babenberg Succession, sometimes called the Austrian Interregnum, was a succession of conflicts in medieval Austria that lasted from 1246 until 1282. The conflict began over the succession of Duke Frederick II of the House of Babenberg after his death in the battle of the Leitha River against King Béla IV of Hungary on 15 June 1246.

Initially, the Bohemian Přemyslids defeated the Hungarian House of Árpád, but in further fighting were defeated in turn by the House of Habsburg. The interregnum ended when King Rudolf I of Germany granted the escheated duchies of Austria and Styria to his sons Albert and Rudolf, respectively, on 27 December 1282.