Encyclopedias, Almanacs, Transcripts, and Maps
- Pessoa Cavalcanti de Albuquerque, João (1878–1930)
- Pessoa, Epitácio da Silva (1865–1942)
- Petah Tikvah
- Peter Aureol (c. 1275/1280–1322)
- Peter Damian (1007–1072)
- Peter Lombard (c. 1095–1160)
- Peter of Spain (13th Century)
- Peter VII
- Peter, Laurence Johnston
- Peter, Paul and Mary
- Petexbatún
- Pétion, Alexandre Sabès (1770–1818)
- Petrarch 1304–1374 Italian Poet and Scholar
- Petrobrás
- Petrochemicals
- Petroleos del Peru (Petroperu)
- Petroleum Expropriation of 1938 (Mexico)
- Petroleum Reserves and Production
- Petroleum, Oil, and Natural Gas
- Petromin