The Privilege of Koszyce or Privilege of Kassa was a set of concessions made by Louis I of Hungary to the Polish szlachta (nobility) in 1374. The privileges were granted in Kassa, Kingdom of Hungary (Polish: Koszyce; today: Košice, Slovakia). In exchange, one of Louis' daughters (Catherine, Mary or Jadwiga) was to ascend the throne of Poland after his death. The szlachta obtained the following privileges: