Former Owner
- Nicolas Rauch1
- Nicolas Yemeniz1
- Nicolaus Pol1
- Nicolaus de Monte Murro1
- Nilorudra Prabhugupta1
- Nonnberg Abbey1
- Norman Winestine1
- Norza, Leon1
- Notre-Dame de Macourt monastery1
- Noël Pinelli1
- Nur al-Din Arslan Shah I1
- Nārāyaṇa Gālane1
- Nīlakaṇṭha Tanūja1
- Oettingen-Wallerstein library1
- Okar, Baganbhaṭṭa1
- Omaha Public Library1
- Orlandus de Fatiis1
- Otto Haas1
- Otto Jahn1
- Otto Walter Fuhrmann1