Human beings, each considered as a single actor within society
Featured Individuals
- Paine, Thomas (1737-1809) - American Revolutionary leader, author of the Common Sense pamphlet
- Paterson, Isabel (1886-1961) - Writer and literary critic, author of The God of the Machine (1943)
Notable Individuals
- Paul, Ron (1935- ) - Texas Republican Congressman, 1988 Libertarian Presidential candidate, 2008 Republican Presidential prospective candidate
- Philosophers - Students and teachers of fundamental principles
- Poirot, Paul L. (1915-2006) - Editor of The Freeman (1956-1987)
- Policy institute individuals - Founders, executives or other employees of policy and educational groups
- Politicians - People who hold or are running for a political office
- Poole, Jr., Robert W. - Founder of Reason Magazine and the Reason Foundation
- Popper, Karl (1902-1994) - 20th century Austrian-born British philosopher
- Postrel, Virginia (1960- ) - Author, columnist, former editor of Reason magazine
- Presidents, United States - Heads of the Executive branch of the United States government
- Presley, Sharon (1943- ) - Psychologist, executive director of Resources for Independent Thinking
- Professors and teachers - Faculty members at schools, colleges and universities
- Psychologists and Psychiatrists - Non-medical and medical practitioners in the study of the mind and human behavior
Other Individuals
- Pacino, Al (1940- ) - American stage and movie actor, winner of Best Actor Oscar for Scent of a Woman
- Paglia, Camille (1947- ) - American writer, author of Sexual Personae, professor of humanities
- Paley, Nina - Cartoonist, animator and activist, creator of Sita Sings the Blues (2008)
- Palmer, Tom G. (1956- ) - Libertarian author, executive vice president for international programs at the Atlas Network
- Parker, Trey (1969- ) - Co-creator and executive producer of "South Park"
- Pastis, Stephan (1968- ) - Cartoonist, creator of the Pearls Before Swine comic strip
- Patten, Simon N. (1852-1922) - American economist, professor at Wharton School of Business
- Pauling, Linus (1901-1994) - Nobel Prize for Chemistry (1954) and Peace (1962)
- Paul, Les (1915-2009) - American guitarist, electric guitar designer
- Pearson, Durk (1943- ) - Pioneer in life extension, expert in anti-aging research and brain biochemistry
- Peart, Neil (1952-2020) - Drummer and lyricist for the Rush rock band
- Pease, Edward (1857-1955) - English writer, founding member of the Fabian Society
- Peck, Gregory (1916-2003) - American movie actor
- Peikoff, Leonard (1933- ) - World's foremost authority on Objectivism
- Peisistratus (Πεισίστρατος; 600-527 BCE) - Tyrant of Athens for three non-consecutive periods during 561-528 BCE
- Penn, William (1644-1718) - English Quaker, founder of the Pennsylvania colony
- Perrin, Jacques (1941-2022) - French movie actor and producer
- Peterson, William H. (1921-2012) - Economist, professor at New York University, emeritus professor at Campbell University
- Peters, Tom (1942- ) - Management guru, co-author of In Search of Excellence
- Petrarch (Francesco Petrarca; 1304-1374) - Italian poet and scholar
- Phalanthus (Φάλανθος) - Spartan captain, credited as the founder the colony of Tarentum
- Phillips, John R. (1887-1983) - Politician, member of the United States House of Representatives from California (1943-1957)
- Piazza, Mike (1968- ) - Baseball catcher with the New York Mets
- Piñera, José (1948- ) - Minister of Labor and Social Security of Chile (1978-1980)
- Pink, Daniel H. (1964- ) - Author, speaker, contributing editor at Wired magazine
- Plato (Πλάτων; 428-347 BCE) - Greek philosopher, student of Socrates
- Platt, Charles (1945- ) - British born writer, author of The Silicon Man
- Podmore, Frank (1856-1910) - English parapsychologist, founding member of the Fabian Society
- Pompey the Great (GNAEVS POMPEIVS MAGNVS; 106-48 BCE) - Roman general and politician
- Pope, Paul (1970- ) - American cartoonist and graphic novelist
- Poppaea Sabina (POPPAEA SABINA; 30-65) - Second wife of Roman emperor Nero
- Popper, John (1967- ) - Singer and harmonica player with the Blues Traveler quartet
- Porter, Sylvia (1913-1991) - American financial writer
- Pound, Ezra (1885-1972) - American poet
- Pournelle, Jerry (1933-2017) - Co-winner (with Larry Niven and Michael Flynn) of 1992 Prometheus Award
- Powell, Benjamin (1978- ) - Professor of economics, director of the Free Market Institute at Texas Tech University
- Powell, Jim - Historian, author of The Triumph of Liberty (2000)
- Pratchett, Terry (1948-2015) - British science fiction and fantasy author, winner of 2003 Prometheus Award
- Prato, Gino (1901-1966) - Italian-American shoemaker who won $32,000 on The $64,000 Question
- Prechter, Robert (1949- ) - Financial writer, expert on the Elliott Wave forecasting theory
- Priestley, J. B. (1894-1984) - English novelist and playwright
- Priestley, Joseph (1733-1804) - English chemist and clergyman
- Proudhon, Pierre-Joseph (1809-1865) - Nineteenth century French economist, founder of the Mutualist philosophy
- Pryce, Jonathan (1947- ) - British film and stage actor, starred as Sam Lowry in Brazil
- Puenzo, Luis (1946- ) - Argentine filmmaker, director of La Historia Oficial
- Pyrrhus (Πύρρος; 319-272 BCE) - King of the state of Epirus in northwestern Greece