Encyclopedias, Almanacs, Transcripts, and Maps
- Pizarro, Gonzalo (c. 1506–1548)
- Pizarro, Hernando (c. 1503–1578)
- Pizarro, José Alonso (?–1755)
- Pizarro, Pedro (1515–1587)
- Plá, Josefina (1909–1999)
- PLACE-NAME
- PLAIN ENGLISH
- PLAIN LANGUAGE
- Plan Inca
- Plan of Agua Prieta
- Plan of Ayala
- Plan of Ayutla
- Plan of Casa Mata
- Plan of Guadalupe
- Plan of Iguala
- Plan of La Noria
- Plan of San Luis Potosí
- Plan of Tacubaya
- Plan of Tuxtepec
- Planck, Max (1858–1947)