- Paul, the Apostle, Saint1
- Paul, the Hermit, Saint, -approximately 3411
- Pazzi, Antonio de'1
- Pazzi, Piero de'1
- Pecia1
- Penitentials1
- Penmanship1
- Penmanship manuals1
- Persephone (Greek deity)1
- Perush Rashi ʻal ha-Torah (Rashi)1
- Perush ha-Torah (Naḥmanides)1
- Philip II, King of Spain, 1527-15981
- Phlebotomy1
- Physics (Aristotle)1
- Physiology1
- Piccolomini, Alfonso di Giacomo d'Antonio Maria, duca di Montemarciano1
- Piccolomini, Andreas1
- Piccolomini, Enea di Bartolomeo de1
- Piccolomini, Maddalena de1
- Piccolomini, Nerius Gabrielli de1