Former Owner
- Petrus de Thureyo1
- Philibert-Charles-Marie Varenne de Fenille1
- Philip Kerr, 11th Marquess of Lothian1
- Philip Robinson1
- Pierre Fraenkel1
- Pierre Gorman1
- Pietro Civaleri1
- Pietro Giuseppe Ignati Mattei Cattochii1
- Pietro Millini1
- Pius XI1
- Poblet Monastery1
- Pîrîzâde, Sayyid ʻAbd Allāh, Shaykh al-Islām1
- Rafael Gomes1
- Raphael Nathan Nata Rabinowitz1
- Richard Halter1
- Richard Heber1
- Richard James Horatio Gottheil1
- Richard Rich1
- Robert Churchill1
- Robert Dechert1