Author
- Nicholas of Lyra1
- Nikolaus von Dinkelsbühl1
- Nilus of Sinai1
- Nārada1
- Nārāyaṇa Goḍabole1
- Nārāyaṇa Samudrika1
- Nārāyaṇāśrama1
- Odo of Meung1
- Oglerio di Lucedio1
- Onasander1
- Paul of Pergula1
- Peter Lombard1
- Peter of Limoges1
- Pietro d'Abano1
- Poggio Bracciolini1
- Priscian1
- Pr̥thuyaśas1
- Pseudo Bernard of Clairvaux1
- Pseudo-Aristotle1
- Pseudo-Hippocrates1