- Paraphrases1
- Part books1
- Part songs1
- Part songs, Italian1
- Part songs, Sacred1
- Paul IV, Pope, 1476-15591
- Paul V, Pope, 1552-16211
- Paul, the Apostle, Saint1
- Persephone (Greek deity)1
- Pesciori, Guglielmo1
- Petrarca, Francesco, 1304-13741
- Pharmacognosy1
- Pharmacology1
- Pharmacy1
- Philip IV, King of Spain, 1605-16651
- Physiognomy1
- Piccolomini, Alessandro1
- Piccolomini, Antonio Maria d'Enea1
- Piccolomini, Giacomo d'Antonio Maria d'Enea1
- Piccolomini, Giovanni d'Andrea di Nanni Todeschini, 1475-15371