Burgfreiheit or Schlossfreiheit was a quarter of Königsberg, Germany. Its territory is now part of Kaliningrad, Russia.
Burgfreiheit extended north of Königsberg Castle on both sides of the Schlossteich, and was outside of Königsberg's three constituent towns, Altstadt, Löbenicht, and Kneiphof. Bordering quarters were Steindamm to the west, Tragheim to the north, Rossgarten to the northeast, Neue Sorge to the east, Löbenicht to the southeast, and the castle to the south.
Documented in 1255, Burgfreiheit was inhabited by noble officials and craftsmen in the vicinity of the Teutonic Knights' castle (Burg). It was one of the castle's Freiheiten, suburbs with special rights. During the Teutonic era, Burgfreiheit also included mills, a court, the servants' infirmary, and two churches. Ca. 1500 it was defended by city walls. During the ducal era, it fell under the jurisdiction of the Oberburggraf residing in the castle.
Most of Königsberg's Reformed adherents lived in Burgfreiheit; the Burgkirche was constructed in the 1690s. Reformed students attended the Burgschule school. In 1680 or 1682Frederick William, the Great Elector, allowed the city's Jewish residents to rent space for prayer at the Eulenburgsches Haus (later Hotel Deutsches Haus) on Burgfreiheit's Kehrwiederstraße (later Theaterstraße).