- Phaedra (Greek mythological character)2
- Phalaris, Tyrant of Agrigentum, active 6th century B.C.2
- Pharmacology2
- Philip, Duke of Burgundy, 1396-14672
- Philosophers, Ancient--Biography2
- Piccolomini family2
- Pigments2
- Pilate, Pontius, active 1st century2
- Pius II, Pope, 1405-14642
- Piyutim2
- Planets2
- Political ethics2
- Portugal2
- Prayers for the dead2
- Prayers, Medieval2
- Priesthood2
- Privileges and immunities, Ecclesiastical2
- Property2
- Prose literature2
- Providence and government of God--Christianity2