Author
- Prosdocimus de Beldemandis1
- Pseudo-Augustine1
- Pseudo-Dionysius the Areopagite1
- Pseudo-Phalaris1
- Ptolemaeus Tancredius1
- Ptolemy1
- Qasem-e Anvar1
- Ramon Llull1
- Ranieri Farnese1
- Ranuccio Farnese1
- Rapolano Terme1
- Raymond of Sabunde1
- Regia Camera (Duchy of Milan)1
- Richard Bolter1
- Richard Burdet1
- Richard Carmarden1
- Richard II of England1
- Richard Robinson1
- Richard Ward1
- Ro. Ba1