Former Owner
- Pietro Canal1
- Pietro Giometti1
- Pietro Giuseppe Ignati Mattei Cattochii1
- Pietro Millini1
- Pietro Odescalchi1
- Pius VI2
- Poblet Monastery1
- Pontigny Abbey2
- Poor Clares1
- Prediger (Schwäbisch Gmünd)1
- Prince Augustus Frederick, Duke of Sussex1
- Prince Sadruddin Aga Khan6
- Prosper Blanchemain1
- Prospero Caffarelli1
- Pîrîzâde, Sayyid ʻAbd Allāh, Shaykh al-Islām1
- Quinton Edward Gurney2
- Qusṭanṭīn ibn Lūdūlf1
- Qāsim al-Īrawānī1
- R. H. Fenn1
- R. J. Bunck1