The Duchy of Nysa or Duchy of Neisse was one of the duchies of Silesia with its capital at Nysa in Lower Silesia. Alongside the Duchy of Siewierz, it was the only ecclesiastical duchy in the Silesian region, as it was ruled by a bishop of the Catholic Church. Nowadays its territory is divided between Poland and the Czech Republic.
- Country
- Poland, Kingdom of Bohemia
- Inception
- 1290
