Former Owner
- Mortimer Frank1
- Muriel Agnes Fry1
- Murray Anthony Potter1
- Nathaniel Castleton Stephen Poyntz1
- Nathaniel Sherman Bouton1
- Neustift Abbey1
- New York Academy of Medicine1
- Niccolò Perotti1
- Nicholas B. Scheetz1
- Nicholas Bacon1
- Nicolas Antoine Labbey de Billy1
- Nicolas Fowle1
- Nicolaus Pol1
- Nicolaus de Monte Murro1
- Notre-Dame monastery (Ambert, France)1
- Novalesa Abbey1
- Ochsenhausen Abbey1
- Oliver R. Barrett1
- Omaha Public Library1
- Orlandus de Fatiis1