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- Namysłów – Opole Voivodeship
- Nidzica – Warmian-Masurian Voivodeship
- Niedzica Castle in Niedzica – Lesser Poland Voivodeship
- Niemcza – Lower Silesian Voivodeship
- Niemodlin – Opole Voivodeship
- Niesytno Castle – Lower Silesian Voivodeship
- Nowy Sącz – Lesser Poland Voivodeship
- Nowy Wiśnicz – Lesser Poland Voivodeship
Read more about this topic: List Of Castles In Poland