- Pastoral poetry1
- Patience1
- Patience--Religious aspects--Islam1
- Patrick, Saint, 373?-463?1
- Paul, the Hermit, Saint, -approximately 3411
- Pego, Jacobus de1
- Penitentials1
- Perpetual calendars1
- Persian language--Lexicography1
- Persius1
- Personal correspondence1
- Perush ha-Torah (Ibn Ezra, Abraham ben Meïr)1
- Peter Martyr, Saint, approximately 1205-12521
- Philip III, King of Spain, 1578-16211
- Philip IV, King of Spain, 1605-16651
- Philosophy and science1
- Physical appearance of Jesus Christ1
- Physical sciences1
- Physics1
- Physics (Aristotle)1