Encyclopedias, Almanacs, Transcripts, and Maps
- Phrixus
- phthalates
- Phumiphon
- Phygellus
- physician's assistant
- Physicians, Nurses, Dentists, and Other Health Care Practitioners
- Pi y Margall, Francisco
- Pi-beseth
- Pi-hahiroth
- Piankhi
- Piatra-Neamţ
- Piauí
- Pic du Midi d'Ossau
- Picard, Edmond
- Piccirilli
- Piccolomini, Enea Silvio de'
- Piccolomini, Ottavio
- Pichegru, Charles
- pichiciago
- Pichincha