- Pesciori, Guglielmo1
- Peter Lombard, Bishop of Paris, approximately 1100-11601
- Petrarca, Francesco, 1304-13741
- Phalaris, Tyrant of Agrigentum, active 6th century B.C.2
- Pharmacognosy1
- Pharmacology1
- Pharmacy1
- Philip II, King of Macedonia, 382 B.C.-336 B.C.1
- Philip II, King of Spain, 1527-15982
- Philosophers, Ancient1
- Philosophers, Ancient--Biography1
- Philosophy6
- Philosophy and religion1
- Philosophy, Ancient1
- Philosophy, Medieval, in literature1
- Physical appearance of Jesus Christ1
- Physical sciences1
- Physicians2
- Physics5
- Physics (Aristotle)4