- Paste papers1
- Patience1
- Patronage, Ecclesiastical1
- Paul III, Pope, 1468-15491
- Pazzi Conspiracy (1478)1
- Pelagianism1
- Penitentials1
- Perpetual calendars1
- Persecution1
- Persecution--Early church1
- Persius1
- Perush Rashi ʻal ha-Torah (Rashi)1
- Peter Lombard, Bishop of Paris, approximately 1100-11601
- Petrarca, Francesco, 1304-13741
- Phalaris, Tyrant of Agrigentum, active 6th century B.C.1
- Pharmacognosy1
- Pharmacology1
- Pharmacy1
- Philip II, King of Macedonia, 382 B.C.-336 B.C.1
- Philosophers, Ancient1