Author
- Porphyry1
- Prince-Bishopric of Toul1
- Priori (Florence)1
- Priscian1
- Pseudo-Augustine1
- Pseudo-Phalaris1
- Ptolemaeus Tancredius1
- Ptolemy1
- Qadi Ayyad1
- Qasem-e Anvar1
- Ramon Llull1
- Raymond of Sabunde1
- Republic of Venice1
- Richard II of England1
- Robert Cooke1
- Robert de Saint-Martin1
- Roman Catholic Diocese of Zaragoza1
- Royal Chancellery of Granada1
- Saadi1
- Sacro Regio Consiglio1