| Roger Ascham | 1515–1568 | 1 |
| E. M. (Edmund Marion) Ashe | 1867–1941 | 2 |
| Daisy Ashford | 1881–1972 | 2 |
| Elias Ashmole | 1617–1692 | 1 |
| Otis Ashmore | 1853–1934 | 1 |
| Margaret Ashmun | 1875–1940 | 1 |
| John Ashton | 1834–1911 | 1 |
| Lena Ashwell | 1872–1957 | 1 |
| Henry Ashworth | 1871–1903 | 1 |
| T. R. (Thomas Ramsden) Ashworth | 1864–1935 | 1 |
| Hilda Maria Asp | 1862–1891 | 1 |
| Margot Asquith | 1864–1945 | 1 |
| Julian Assange | born 1971 | 1 |
| Eduard Philibert Assmuss | 1838–1882 | 1 |
| Alfred Assollant | 1827–1886 | 7 |
| John Jacob Astor | 1864–1912 | 1 |
| Gertrude Franklin Horn Atherton | 1857–1948 | 15 |
| Elizabeth Atkins | 1891–1962 | 1 |
| Gaius Glenn Atkins | 1868–1956 | 1 |
| Eleanor Atkinson | 1863–1942 | 1 |
| J. Beavington Atkinson | 1822–1886 | 1 |
| James Atkinson | 1780–1852 | 1 |
| William Patterson Atkinson | 1869–1943 | 1 |
| William Walker Atkinson | 1862–1932 | 8 |
| Emily Paret Atwater | 1873–1951 | 1 |
| D. F. E. (Daniel François Esprit) Auber | 1782–1871 | 1 |
| Philippe Aubert de Gaspé | 1814–1841 | 1 |
| Eugène Aubert | 1832–1917 | 1 |
| John Aubrey | 1626–1697 | 2 |
| Marguerite Audoux | 1863–1937 | 1 |
| Berthold Auerbach | 1812–1882 | 7 |
| Clara Augusta | 1839–1905 | 1 |
| Augustine, of Hippo, Saint | 354–430 | 1 |
| F.-A. (François-Alphonse) Aulard | 1849–1928 | 2 |
| Johan Aulén | 1837–1906 | 1 |
| Stacy Aumonier | 1887–1928 | 1 |
| J. Berlioz d' (Jules Berlioz) Auriac | 1820–1913 | 1 |
| Jane Austen | 1775–1817 | 10 |
| James Edward Austen-Leigh | 1798–1874 | 1 |
| Richard Arthur Austen-Leigh | 1872–1961 | 1 |
| William Austen-Leigh | 1843–1921 | 1 |
| Anne Austin | 1895–1975 | 1 |
| Jane G. (Jane Goodwin) Austin | 1831–1894 | 2 |
| John Mather Austin | 1805–1880 | 1 |
| Mary Austin | 1868–1934 | 5 |
| Walter F. (Walter Forward) Austin | born 1872 | 2 |
| Mellie von Auw | born 1876 | 1 |
| Avancinio Avancini | 1866–1939 | 1 |
| Eleanor Marx Aveling | 1855–1898 | 2 |
| Edvin Avellan | 1830–1912 | 2 |
| Emmett Langdon Avery | 1903–1970 | 1 |
| Harold Avery | 1867–1943 | 1 |
| M. d' (Marie Armand Pascal) Avezac | 1800–1875 | 1 |
| Paul Avril | 1849–1928 | 1 |
| William E. A. (William Edward Armytage) Axon | 1846–1913 | 1 |
| Roger D. Aycock | 1914–2004 | 2 |
| I. Winslow Ayer | 1826–1909 | 1 |
| Joseph Cullen Ayer | 1866–1944 | 1 |
| Théodore Aynard | 1812–1902 | 1 |
| Leonard Porter Ayres | 1879–1946 | 1 |
| May Ayres | 1888–1953 | 1 |
| Ruby M. (Ruby Mildred) Ayres | 1883–1955 | 1 |
| William Edmondstoune Aytoun | 1813–1865 | 3 |
| Félix de Azara | 1742–1821 | 1 |
| Guilherme Avelino Chave de Azevedo | 1846–1882 | 1 |
| Maximiliano de Azevedo | 1850–1911 | 1 |
| Mariano Azuela | 1873–1952 | 1 |
| ʻAli Muhammad Shirazi Bab | 1819–1850 | 2 |
| Charles Babbage | 1791–1871 | 2 |
| Bernie Babcock | 1868–1962 | 1 |
| Charles Almanzo Babcock | 1847–1922 | 1 |
| B. G. (Benjamin Guy) Babington | 1794–1866 | 1 |
| Roger Ward Babson | 1875–1967 | 1 |
| Ida Baccini | 1850–1911 | 1 |
| François le Coigneux de Bachaumont | 1624–1702 | 1 |
| Constance Bache | 1846–1903 | 2 |
| Irving Bacheller | 1859–1950 | 9 |
| Joseph M. (Joseph Morris) Bachelor | 1889–1947 | 2 |
| William Elmer Bachman | 1894–1966 | 1 |
| Albion Fellows Bacon | 1865–1933 | 1 |