- Privileges and immunities, Ecclesiastical1
- Procedure (Law)1
- Profession (in religious orders, congregations, etc.)1
- Propertius, Sextus1
- Property1
- Property tax1
- Prophecies1
- Protestants1
- Provenance labels1
- Pupi, Benedetto1
- Quadrants (Astronomical instruments)1
- Quotations1
- Regula (Benedict, Saint, Abbot of Monte Cassino)1
- Remoldus, Bishop of Ozilia1
- Rerum rusticarum libri tres (Varro, Marcus Terentius)1
- Ressano, Catterina1
- Ressano, Giovanni1
- Rhetoric (Aristotle)1
- Rhetoric--Study and teaching1
- Rhetorica ad Herennium1