| Joseph Pisani | American artist and photograp… | 1971 |
| Vittore Pisani | Italian linguist | 1899–1990 |
| Gilmar Pisas | Curaçaoan politician and civi… | 1971 |
| Camille Pissarro | French painter | 1830–1903 |
| Robert Pistillo | | |
| Sam Pitroda | Indian businessman | 1942 |
| Brad Pitt | American actor and filmmaker | 1963 |
| Christopher Pitt | English poet | 1699–1748 |
| William Rivers Pitt | writer | 1971 |
| Frank Pittman | American psychiatrist | 1935–2012 |
| Sean Pittman | | 1968 |
| Susan Piver | American writer | 1957 |
| Sasha Pivovarova | Russian model | 1985 |
| Christine de Pizan | Italian French late medieval … | 1365–1430 |
| Alejandra Pizarnik | Argentinian poet | 1936–1972 |
| Francis Place | English social reformer | 1771–1854 |
| Philip Plait | astronomer, skeptic | 1964 |
| Valerie Plame | American spy | 1963 |
| Max Planck | German theoretical physicist | 1858–1947 |
| Kevin Plank | American entrepreneur and phi… | 1972 |
| Jacques Plante | Canadian ice hockey player | 1929–1986 |
| Alvin Plantinga | American Christian philosopher | 1932 |
| Salvador Plascencia | American writer | 1976 |
| Hugh Plat | writer | 1552–1608 |
| Sylvia Plath | American poet, novelist and s… | 1932–1963 |
| Sylvia Plath | American poet, novelist and s… | 1932–1963 |
| Marie-Jeanne Roland de la Platière | French revolutionary | 1754–1793 |
| Plato | Classical Greek philosopher | -427–-347 BC |
| Charles Platt | Author, journalist and comput… | 1945 |
| John R. Platt | American physicist | 1918–1992 |
| Plautus | Roman comic playwright of the… | -254–-184 BC |
| Gary Player | South African golfer | 1935 |
| William Playfair | British mathematician, engine… | 1758–1824 |
| Donald Pleasence | British actor | 1919–1995 |
| Georgi Plekhanov | Russian revolutionary | 1856–1918 |
| Andrej Plenković | Prime Minister of Croatia | 1970 |
| Ian Plimer | Australian geologist | 1946 |
| George Plimpton | journalist, writer, editor, a… | 1927–2003 |
| Martha Plimpton | American actress | 1970 |
| William Plomer | South African-British writer | 1903–1973 |
| Plotinus | Neoplatonist philosopher | 203–270 |
| Charles Plott | American economist | 1938 |
| Joe the Plumber | American conservative activis… | 1973 |
| Carol Plum-Ucci | American writer | 1957 |
| George Washington Plunkitt | New York State Senator | 1842–1924 |
| Plutarch | ancient Greek historian and p… | 46–127 |
| John Podesta | Former White House Chief of S… | 1949 |
| Lukas Podolski | German footballer | 1985 |
| Boris Podolsky | American physicist | 1896–1966 |
| Edgar Allan Poe | American author, poet, editor… | 1809–1849 |
| Amy Poehler | American actress | 1971 |
| Poemen | Egyptian monk and desert fath… | 340–450 |
| Ivo Pogorelić | Croatian pianist | 1958 |
| Letty Cottin Pogrebin | American author, journalist, … | 1939 |
| David Pogue | Technology writer, journalist… | 1963 |
| John Pogue | American film director, produ… | |
| Frederik Pohl | American science fiction writ… | 1919–2013 |
| Oswald Pohl | Head of the SS Wirtschafts-Ve… | 1892–1951 |
| Wu Po-hsiung | Taiwanese politician | 1939 |
| Henri Poincaré | French mathematician, physici… | 1854–1912 |
| Raymond Poincaré | 10th President of the French … | 1860–1934 |
| Louis Poinsot | French mathematician and phys… | 1777–1859 |
| Siméon Denis Poisson | French mathematician, mechani… | 1781–1840 |
| Sidney Poitier | American-born Bahamian actor,… | 1927 |
| Hilary of Poitiers | Bishop of Poitiers | 315–367 |
| Suman Pokhrel | Nepali poet, lyricist, playwr… | 1967 |
| Natalia Poklonskaya | Prosecutor of the Republic of… | 1980 |
| Fred Polak | Dutch futurologist | 1907–1985 |
| Wojciech Polak | Polish priest | 1964 |
| Roman Polanski | Polish-French film director, … | 1933 |
| John Polanyi | Hungarian-Canadian chemist | 1929 |
| Karl Polanyi | economist, philosopher and hi… | 1886–1964 |
| Michael Polanyi | Hungarian-British polymath | 1891–1976 |
| Joseph Polchinski | physicist working on string t… | 1954–2018 |
| Mario Aurelio Poli | Catholic Cardinal from Argent… | 1947 |
| Pierre Polinière | French physicist | 1671–1734 |
| Jared Polis | American entrepreneur, philan… | 1975 |
| Mark Polish | American film actor, screenwr… | 1970 |
| David Johnson (Iowa politician) | Iowa State Senator, born 1950 | 1950 |
| Joe Wilson (U.S. politician) | | |
| John Anderson (Australian politician) | Australian politician, 11th D… | 1956 |
| Mike Lee (U.S. politician) | American politician | 1971 |
| Thomas Cooper (U.S. politician) | | |
| Thomas Osborne Davis (Irish politician) | Irish writer and activist | 1814–1845 |
| Tom Price (U.S. politician) | former United States Secretar… | 1954 |
| Tom Watson (Labour politician) | British politician | 1967 |
| Anna Politkovskaya | Russian journalist | 1958–2006 |
| Poliziano | Italian writer | 1454–1494 |
| James K. Polk | American politician, 11th Pre… | 1795–1849 |
| John Polkinghorne | physicist and priest | 1930 |
| Joel Pollak | Politician, writer | 1977 |
| Michael Pollan | American author, journalist, … | 1955 |
| John Garland Pollard | American politician | 1871–1937 |
| Jackson Pollock | American artist | 1912–1956 |
| Sheldon Pollock | American linguist | 1948 |
| Robert Pollok | Scottish poet | 1798–1827 |
| Marco Polo | Venetian explorer and merchan… | 1254–1324 |
| Abraham Polonsky | American politician | 1910–1999 |
| George Pólya | Hungarian mathematician | 1887–1985 |
| Polybius | ancient Greek historian | -208–-126 BC |
