| Philolaus | ancient greek philosopher | -470–-390 BC |
| John Austin (legal philosopher) | legal philosopher | 1790–1859 |
| Richard Gregg (social philosopher) | | |
| Philostratus | Lucius Flavius Philostratus, … | 170 |
| Simon Phipps | computer scientist | |
| Joaquin Phoenix | American actor, music video d… | 1974 |
| River Phoenix | American actor, musician, and… | 1970–1993 |
| Kaysone Phomvihane | first General Secretary of th… | 1920–1992 |
| Diadochos of Photiki | Byzantine saint | 400–486 |
| Phan Thi Kim Phuc | Child depicted in the Pulitze… | 1963 |
| Jean Piaget | Swiss psychologist, biologist… | 1896–1980 |
| Mau Piailug | Micronesian navigator from th… | 1932–2010 |
| Rich Piana | American bodybuilder and inte… | 1970–2017 |
| Sarah Morgan Bryan Piatt | American writer | 1836–1919 |
| Francis Picabia | French painter and writer | 1879–1953 |
| Fabian Picardo | Gibraltarian politician and b… | 1972 |
| Pablo Picasso | Spanish painter, sculptor, pr… | 1881–1973 |
| Jeannette Piccard | American balloonist, scientis… | 1895–1981 |
| Alessandro Piccolomini | Italian writer and philosopher | 1508–1579 |
| Éric Pichet | economist | 1960 |
| William Leonard Pickard | American writer and researcher | 1945 |
| Chip Pickering | American politician | 1963 |
| Mary Pickford | Canadian-American actress | 1892–1979 |
| Pío Pico | Governor of Alta California | 1801–1894 |
| Jodi Picoult | Author | 1966 |
| Caroline Pidgeon | British politician | 1972 |
| Luisito Pié | Dominican taekwondo athlete | 1994 |
| Roger A. Pielke | American meteorologist | 1946 |
| Josef Pieper | German philosopher | 1904–1997 |
| Sandra Pierantozzi | Palauan politician | 1953 |
| Bob Pierce | American evangelical charity … | 1914–1978 |
| Franklin Pierce | American politician, 14th Pre… | 1804–1869 |
| Meredith Ann Pierce | American writer | 1958 |
| Tamora Pierce | American writer of fantasy no… | 1954 |
| William Luther Pierce | American white nationalist | 1933–2002 |
| Marge Piercy | American novelist and poet | 1936 |
| Aloysius Pieris | Sri Lankan Jesuit priest | 1934 |
| Alessandro Del Piero | Italian former professional f… | 1974 |
| Henri Piéron | French psychologist | 1881–1964 |
| John Pierpont | American writer | 1785–1866 |
| Christophe Pierre | French nuncio | 1946 |
| Georges St. Pierre | Canadian mixed martial artist | 1981 |
| Albert Pierrepoint | English executioner | 1905–1992 |
| Katrina Pierson | Political spokesperson | 1976 |
| Pedro Pietri | Puerto Rican writer | 1944–2004 |
| Dmitry Pietrman | Businessman/football chairman | 1963 |
| Antonio Di Pietro | Italian politician, magistrat… | 1950 |
| Massimo Pigliucci | chair of the Department of Ph… | 1964 |
| Arthur Cecil Pigou | British economist | 1877–1959 |
| Albert Pike | Confederate States Army gener… | 1809–1891 |
| Christopher Pike | American author Kevin Christo… | 1954 |
| Rob Pike | software engineer | 1956 |
| Thomas Piketty | French economist | 1971 |
| Marcelo H. del Pilar | Filipino writer, lawyer, and … | 1850–1896 |
| Pontius Pilate | was the fifth Prefect of the … | -12–38 BC |
| Joseph Pilates | German inventor of pilates | 1883–1967 |
| Rosamunde Pilcher | British novelist | 1924–2019 |
| Witold Pilecki | World War II concentration ca… | 1901–1948 |
| John Pilger | Australian journalist | 1939 |
| Mark Pilgrim | American computer programmer | 1972 |
| Peace Pilgrim | American non-denominational s… | 1908–1981 |
| Orrin H. Pilkey | American ecologist | 1934 |
| Karl Pilkington | English television personalit… | 1972 |
| Anthony Pilla | auxiliary Bishop of Cleveland… | 1932 |
| Stephen Antony Pillai | Roman Catholic bishop | 1952 |
| Józef Piłsudski | Polish politician and Prime M… | 1867–1935 |
| Daniel Pinchbeck | American author and journalist | 1966 |
| Viktor Pinchuk | | 1969 |
| Charles Cotesworth Pinckney | American politician | 1746–1825 |
| Pindar | Ancient Greek poet | -517–-437 BC |
| Patrick Pinder | Roman Catholic archbishop of … | 1953 |
| Red Pine | American author, poet, and tr… | 1943 |
| Jon Pineda | American writer | 1971 |
| Arthur Wing Pinero | British writer | 1855–1934 |
| Miguel Piñero | Puerto Rican writer | 1946–1988 |
| Jean Ping | Gabonese politician | 1942 |
| Tsai Ping-kun | Taiwanese politician | 1959 |
| Ariel Pink | American musician | 1978 |
| Daniel H. Pink | American business writer | 1964 |
| Steven Pinker | psychologist, linguist, author | 1954 |
| Edward Coote Pinkney | American poet, lawyer, sailor… | 1802–1828 |
| Chiang Pin-kung | Taiwanese politician | 1932–2018 |
| Daniel Pinkwater | writer | 1941 |
| Augusto Pinochet | Former dictator of the republ… | 1915–2006 |
| Robert Pinsky | American poet, editor, litera… | 1940 |
| Harold Pinter | playwright from England | 1930–2008 |
| Lai Pin-yu | Taiwanese social activist | 1992 |
| Padre Pio | Italian saint, priest, stigma… | 1887–1968 |
| Pierre Piobb | French ophthalmologist (1874-… | 1874–1942 |
| Billie Piper | English singer, dancer and ac… | 1982 |
| H. Beam Piper | American science fiction writ… | 1904–1964 |
| John Piper | American writer | 1946 |
| Daniel Pipes | U.S. neoconservative columnis… | 1949 |
| Richard Pipes | American historian | 1923–2018 |
| Robert B. Pippin | American philosopher | 1948 |
| Luigi Pirandello | Italian dramatist, novelist, … | 1867–1936 |
| Dan Piraro | cartoonist | 1958 |
| Fritiof Nilsson Piraten | Swedish writer | 1895–1972 |
| Andrea Pirlo | Italian footballer | 1979 |
| Robert M. Pirsig | American writer and philosoph… | 1928–2017 |
