Encyclopedias, Almanacs, Transcripts, and Maps
- Popenoe, Frederick Wilson (1892–1975)
- Popes and Papacy
- Popham, Home Riggs (1762–1820)
- Pople, John Anthony
- Popoloca
- Popoluca
- Popper, Karl Raimund (1902–1994)
- Popular Action (AP)
- Popular Action (AP)
- Popular Action Front
- Popular Action Unitary Movement (MAPU)
- Popular Arguments for the Existence of God
- Popular Democratic Party (PPD)
- Popular Front for the Liberation of the Occupied Arabian Gulf
- Popular Music and Dance
- Popular Unity
- Poqomam
- Poqomam
- Poqomchi'
- Porfiriato