- Naval art and science1
- Nawawī, 1233-1277. Taṣḥīḥ al-Tanbīh1
- Neoplatonism1
- Neretti, Piero1
- Nero, Nerozzo del1
- Neuland, Walter, active 14501
- Neumes1
- Niccolò, Lapino di1
- Niccolò, Lapo di1
- Nicholas V, Pope, 1397-14551
- Nicholas, of Dinkelsbühl, approximately 1360-14331
- Nicomachean ethics (Aristotle)1
- Ninth century1
- Nobility1
- Nofrio, Jacopo di1
- Norbert, of Xanten, Saint, approximately 1080-11341
- Novitiate1
- Nukhbat al-fikar fī muṣṭalaḥ ahl al-athar (Ibn Ḥajar al-ʻAsqalānī, Aḥmad ibn ʻAlī)1
- Nuns1
- Oaths (Islamic law)1