- Oviedo, Nicolás de, 1725-1
- Pablo de Santa Maria, Bishop of Burgos, approximately 1351-14351
- Painted books1
- Painted leather bindings4
- Palomino family1
- Paper1
- Parchment (Paper)2
- Passion of Jesus Christ1
- Passover sermons1
- Pastoral theology1
- Patriotism1
- Pelayo, King of Asturias, -7372
- Penmanship2
- Penmanship manuals1
- Perez Barahona, Juan, active 1560-15621
- Peru1
- Philip II, King of Spain, 1527-15988
- Philip III, King of Spain, 1578-16214
- Philip IV, King of Spain, 1605-16652
- Philosophy and religion1