Author
- Priori (Florence)1
- Privy Council of the United Kingdom1
- Pseudo-Augustine1
- Pseudo-Phalaris1
- Ptolemaeus Tancredius1
- Qasem-e Anvar1
- Ramon Llull1
- Ranuccio Farnese1
- Rapolano Terme1
- Raymond of Sabunde1
- Regia Camera (Duchy of Milan)1
- Republic of Venice1
- Richard Burdet1
- Richard II of England1
- Richard Ward1
- Robert Cooke1
- Robert de Saint-Martin1
- Rodolfo Pio da Carpi1
- Roman Catholic Archdiocese of Mainz1
- Roman Catholic Diocese of Osma-Soria1