Author
- Muscio1
- Mutianus Scholasticus1
- Nado de Tolomeo1
- Naldo Naldi1
- Niccolò D'Andrea Piccolomini1
- Nicholas Trivet1
- Nicholas of Gorran1
- Nicholas of Salerno1
- Nicolaccio de' Mignanellis1
- Nikolaos Sagundino1
- Nikolaus von Dinkelsbühl1
- Notre-Dame de Chartres1
- Onasander1
- Order of the Immaculate Conception1
- Orderic Vitalis1
- Osbern of Gloucester1
- Palazzo degli Anziani1
- Panormitanus1
- Paschal II1
- Paschasius Radbertus1