| Ferdynand Antoni Ossendowski | 1878–1945 | 1 |
| Isabel Ostrander | 1883–1924 | 1 |
| Aleksandr Nikolaevich Ostrovsky | 1823–1886 | 2 |
| Hans Ostwald | 1873–1940 | 1 |
| Charles P. (Charles Pomeroy) Otis | 1840–1888 | 3 |
| James Otis | 1848–1912 | 8 |
| E. C. (Elise C.) Otté | 1818–1903 | 1 |
| Thomas Otway | 1652–1685 | 1 |
| Ouida | 1839–1908 | 11 |
| Xiu Ouyang | 1007–1072 | 2 |
| William Heysham Overend | 1851–1898 | 8 |
| Jacqueline Overton | 1887–1954 | 1 |
| John Henry Overton | 1835–1903 | 1 |
| William Hassell Overton | born 1868 | 1 |
| F. M. (Frances Mary) Owen | 1842–1883 | 1 |
| Luella Agnes Owen | 1852–1932 | 1 |
| Robert Emmett Owen | 1878–1957 | 10 |
| Wilfred Owen | 1893–1918 | 1 |
| Will Owen | 1869–1957 | 80 |
| John Oxenford | 1812–1877 | 1 |
| John Oxenham | 1852–1941 | 4 |
| J. Macdonald (James Macdonald) Oxley | 1855–1907 | 2 |
| John Oxley | 1783–1828 | 1 |
| Henry Oyen | 1883–1921 | 1 |
| José Pacheco | 1885–1934 | 1 |
| Charles Lathrop Pack | 1857–1937 | 1 |
| A. S. (Alpheus Spring) Packard | 1839–1905 | 2 |
| Frank L. (Frank Lucius) Packard | 1877–1942 | 4 |
| C. M. (Charles Murray) Padday | 1868–1954 | 1 |
| Curtis Hidden Page | 1870–1946 | 1 |
| Elizabeth Fry Page | 1865–1943 | 1 |
| Gertrude Page | 1872–1922 | 1 |
| Thomas Nelson Page | 1853–1922 | 16 |
| Sidney Paget | 1860–1908 | 1 |
| Walter Paget | 1863–1935 | 5 |
| Barry Pain | 1864–1928 | 2 |
| Albert Bigelow Paine | 1861–1937 | 17 |
| Harriet E. (Harriet Eliza) Paine | 1845–1910 | 1 |
| Ralph Delahaye Paine | 1871–1925 | 3 |
| Thomas Paine | 1737–1809 | 6 |
| F. V. N. (Franklin Verzelius Newton) Painter | 1852–1931 | 2 |
| Teuvo Pakkala | 1862–1925 | 12 |
| Armando Palacio Valdés | 1853–1938 | 4 |
| Kostes Palamas | 1859–1943 | 1 |
| Lewis Stanton Palen | 1878–1960 | 1 |
| William Paley | 1743–1805 | 1 |
| Francis Turner Palgrave | 1824–1897 | 3 |
| Palliser, Bury, Mrs. | 1805–1878 | 1 |
| Ricardo Palma | 1833–1919 | 1 |
| Alice Freeman Palmer | 1855–1902 | 1 |
| Arthur H. (Arthur Hubbell) Palmer | 1859–1918 | 1 |
| Frederick Palmer | 1873–1958 | 4 |
| G. H. (George Henry) Palmer | born 1871 | 1 |
| George Herbert Palmer | 1842–1933 | 1 |
| John Palmer | 1885–1944 | 1 |
| Robert Stafford Arthur Palmer | 1888–1916 | 1 |
| Robert Paltock | 1697–1767 | 1 |
| C. L. F. (Charles Louis Fleury) Panckoucke | 1780–1844 | 5 |
| Pansy | 1841–1930 | 7 |
| Frank Cheyne Papé | 1878–1972 | 1 |
| Swami Paramananda | 1884–1940 | 1 |
| Pardo Bazán, Emilia, condesa de | 1852–1921 | 3 |
| T. H. (Trinidad Hermenegildo) Pardo de Tavera | 1857–1925 | 3 |
| Quintin Paredes y Babila | 1884–1973 | 1 |
| John Paris | 1889–1976 | 1 |
| Paulin Paris | 1800–1881 | 1 |
| Julian Park | 1888–1965 | 1 |
| Mungo Park | 1771–1806 | 4 |
| Cornelia Stratton Parker | 1885–1972 | 2 |
| De Witt H. (De Witt Henry) Parker | 1885–1949 | 1 |
| Dorothy Parker | 1893–1967 | — |
| Edward Harper Parker | 1849–1926 | 1 |
| Francis W. (Francis Wayland) Parker | 1837–1902 | 1 |
| Gilbert Parker | 1862–1932 | 132 |
| John H. (John Henry) Parker | 1866–1942 | 1 |
| K. Langloh (Katie Langloh) Parker | 1856–1940 | 2 |
| Lester Shepard Parker | 1860–1925 | 1 |
| Richard Green Parker | 1798–1869 | 1 |
| Theodore Parker | 1810–1860 | 1 |
| William Riley Parker | 1906–1968 | 1 |