- Penitentials1
- Perpetual calendars1
- Persian language--Lexicography1
- Persian language--Versification1
- 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
- Physiognomy1
- Pilate, Pontius, active 1st century1
- Pilgrims and pilgrimages1
- Pilgrims and pilgrimages in literature1
- Pinos, Pedro de1