- Orden de Alcántara1
- Orthodox Eastern Church1
- Painted bindings1
- Pakhomiĭ Logofet, monk, active 15th century1
- Palm-leaf manuscripts1
- Pastoral theology--Catholic Church1
- Paul, the Deacon, approximately 720-799?1
- Paul, the Hermit, Saint, -approximately 3411
- Pecia1
- Penmanship1
- Persian language1
- Persius1
- Petrus, de Herenthals, 1322-1390 or 13911
- Phaedra (Greek mythological character)1
- Philip II, King of Spain, 1527-15981
- Philosophy, Medieval1
- Philoxenus, Bishop of Hierapolis, approximately 440-5231
- Physics (Aristotle)1
- Physiognomy1
- Piccinino, Nicolo, -14441