- Ovando, Nicolás de, approximately 1460-15111
- Oviedo family1
- Oviedo, Francisco de, 1728-1
- Oviedo, Gregorio de, 1721-17961
- Oviedo, Nicolás de, 1725-1
- Panama--Panama1
- Pedro I, King of Castile and Leon, 1334-13691
- Perez Barahona, Juan, active 1560-15621
- Peru (Viceroyalty). Real Caja de Cuzco1
- Peru--Lima1
- Philip II, King of Spain, 1527-15981
- Philip III, King of Spain, 1578-16211
- Philippines1
- Philippines--Manila1
- Pic̨arro, Diego1
- Pizarro, Gonzalo, -15481
- Pizarro, Pedro, active 16th century1
- Prophecies1
- Puga family1
- Quintanilla, Alonso de, approximately 1430-15001