Author
- Nicoluccio di Ascoli1
- Nikolaos Sagundino1
- Nikolaus von Dinkelsbühl1
- Nizami Ganjavi1
- Notre-Dame de Chartres1
- Odo of Meung1
- Onasander1
- Order of the Argonauts of Saint Nicholas1
- Origen1
- Osbern of Gloucester1
- Otto III1
- Paschal II1
- Paschasius Radbertus1
- Paschualis Bernardus1
- Paul of Aegina1
- Pedro de Serra1
- Pere Marsili1
- Peter Cantor1
- Peter Paludanus1
- Peter Pascual1