Former Owner
- Nasir al-Din al-Tusi1
- Naulī Viṭhala1
- New York Academy of Medicine10
- Niccolò Perotti1
- Nicholai von Bodeck1
- Nicolas Antoine Labbey de Billy1
- Nur al-Din Arslan Shah I1
- Okar, Baganbhaṭṭa1
- Otto Ege1
- Over, Watson1
- Pangracius Chrewczer1
- Paurāṇika, Rāmacandrabhaṭṭa1
- Penzance Library1
- Peter Ludwig1
- Petrus Leonardus1
- Petrus Martinotius1
- Philip Robinson1
- Philippe II de Croÿ1
- Phyllis Walter Goodhart Gordan2
- Pietro Dini1