- Nacci, Filippo1
- Nardo, Cecco di1
- Nashr fī al-qirāʼāt al-ʻashr (Ibn al-Jazarī, Muḥammad ibn Muḥammad)1
- Natural history1
- Navarre (Kingdom)1
- Navarre (Kingdom). Cortes1
- Negative theology1
- Neretti, Piero1
- Nero, Nerozzo del1
- Netherlands1
- Niccolò, Lapino di1
- Niccolò, Lapo di1
- Nicholas V, Pope, 1397-14551
- Nile River1
- Nofrio, Jacopo di1
- North Macedonia--Skopje1
- Nukhbat al-fikar fī muṣṭalaḥ ahl al-athar (Ibn Ḥajar al-ʻAsqalānī, Aḥmad ibn ʻAlī)1
- Old age1
- Oria, Johannes d'1
- Orlandini, Stefano1