Former Owner
- Oettingen-Wallerstein library1
- Okar, Baganbhaṭṭa1
- Oliver R. Barrett2
- Oric Bates2
- Otto Ege2
- Otto Jahn1
- Otto Orren Fisher1
- Otto Vollbehr2
- Owen D. Young1
- P. Desq1
- Paolino Gianfilippi1
- Paolo Giovio1
- ParvaṇIkara Govindabhaṭṭaputra1
- Paul Riant14
- Pauline Fore Moffitt1
- Paulus de Graecus1
- Paurāṇika, Rāmacandrabhaṭṭa1
- Perceval Lucas1
- Peter Ludwig1
- Philip Augustus Hanrott1