Author
- Pedro Pizarro1
- Pedro de Valencia1
- Pepo d'Antonio di Lando Degli Albizzi1
- Peter Pascual1
- Peter of Poitiers1
- Philip Sidney1
- Philipp Melanchthon1
- Pierre Choisnet1
- Pietro Cavallini1
- Pietro de' Crescenzi1
- Plutarch1
- Priscian1
- Pseudo-Bonaventure1
- Qadi Ayyad1
- Qutb al-Din al-Shirazi1
- Qāz̤ī Muḥammad Aʻlá1
- Qāḍī Zāda al-Rūmī1
- Rajab ʻAlī Beg Surūr1
- Ranieri Farnese1
- Ranulf Higden1