Former Owner
- Pius XI1
- Poblet Monastery1
- Pîrîzâde, Sayyid ʻAbd Allāh, Shaykh al-Islām1
- Qusṭanṭīn ibn Lūdūlf1
- Rafael Gomes1
- Raphael Nathan Nata Rabinowitz1
- Raymond Oliver1
- Richard Halter1
- Richard James Horatio Gottheil1
- Richard Rich1
- Robert Churchill1
- Robert Dallas1
- Robert Dechert1
- Robert Mignan1
- Robert Neville1
- Robert Samuel Turner1
- Robert de Mol1
- Rudolphus Rasser Donatus1
- S. Ereilter1
- Saeed Nafisi1