Former Owner
- Noël Pinelli1
- Nur al-Din Arslan Shah I1
- Nūr al-Dīn Darvīsh1
- Ochsenhausen Abbey1
- Oliver R. Barrett1
- Omaha Public Library1
- Orlandus de Fatiis1
- Otto Schäfer1
- Owen D. Young1
- P. Desq1
- Pangracius Chrewczer1
- Paolino Gianfilippi1
- Paolo Gallo1
- Paolo Vimercati Sozzi1
- ParvaṇIkara Govindabhaṭṭaputra1
- Pascal Gay1
- Paul Gottschalk1
- Paul de Berthou1
- Pauline Fore Moffitt1
- Paulus de Graecus1