| Yu Lu | 733–804 | 2 |
| Lubbock, John, Sir | 1834–1913 | 1 |
| Percy Lubbock | 1879–1965 | 2 |
| E. V. (Edward Verrall) Lucas | 1868–1938 | 13 |
| Robert Luce | 1862–1946 | 1 |
| of Samosata Lucian | 120–180 | 4 |
| Gian Pietro Lucini | 1867–1914 | 1 |
| M. Lucio y Bustamante | 1842–1893 | 1 |
| Emil Lucka | 1877–1941 | 1 |
| Matthew Luckiesh | 1883–1967 | 1 |
| Lucy, Henry W. (Henry William), Sir | 1845–1924 | 1 |
| Fitz Hugh Ludlow | 1836–1870 | 1 |
| Anthony M. (Anthony Mario) Ludovici | 1882–1971 | 1 |
| Otto Ludwig | 1813–1865 | 1 |
| John N. (John Nicholas) Luff | 1860–1938 | 1 |
| Louis Lumet | 1872–1923 | 1 |
| Carl Lumholtz | 1851–1922 | 2 |
| Benjamin Lumley | 1812–1875 | 1 |
| Savile Lumley | 1876–1960 | 1 |
| Florence Lundborg | 1871–1949 | 1 |
| Axel Lundegård | 1861–1930 | 2 |
| Thomas Goff Lupton | 1791–1873 | 1 |
| Max Aaron Luria | born 1891 | 1 |
| Mark Lee Luther | 1872–1951 | 1 |
| Martin Luther | 1483–1546 | 12 |
| Henry F. (Henry Frey) Lutz | 1868–1926 | 1 |
| R. R. (Rufus Rolla) Lutz | born 1873 | 1 |
| Rei de Portugal Luís I | 1838–1889 | 1 |
| Lyall, Alfred C., Sir | 1835–1911 | 1 |
| Edna Lyall | 1857–1903 | 3 |
| Leonard Arthur Lyall | born 1867 | 1 |
| Lyell, Charles, Sir | 1797–1875 | 2 |
| George Lynch | 1868–1928 | 1 |
| John Roy Lynch | 1847–1939 | 1 |
| Robert Lynd | 1879–1949 | 3 |
| Francis Lynde | 1856–1930 | 9 |
| Leverett S. (Leverett Samuel) Lyon | 1885–1959 | 1 |
| J. (John) Lyth | 1821–1886 | 1 |
| Lyttelton, George Lyttelton, Baron | 1709–1773 | 1 |
| Lytton, Edward Bulwer Lytton, Baron | 1803–1873 | 215 |
| Lytton, Edward Robert Bulwer Lytton, Earl of | 1831–1891 | 2 |
| André Léo | 1824–1900 | 1 |
| Éliphas Lévi | 1810–1875 | 2 |
| Honorio López | 1875–1958 | 3 |
| Elisabeth Löfgren | 1851–1931 | 7 |
| Stefan Löfving | 1689–1777 | 1 |
| Elias Lönnrot | 1802–1884 | 8 |
| Hermann Löns | 1866–1914 | 1 |
| F. (Ferdinand) Löwe | 1809–1889 | 2 |
| Kun Lü | 1536–1618 | 1 |
| Zuqian Lü | 1137–1181 | 1 |
| M. Grímsson (Magnús Grímsson) | 1825–1860 | 1 |
| Ma, Huan, active | 1414–1451 | 2 |
| Hamilton Wright Mabie | 1846–1916 | 20 |
| Apolinario Mabini | 1864–1903 | 3 |
| Robert Alexander Stewart Macalister | 1870–1950 | 1 |
| C. C. MacApp | 1917–1971 | 1 |
| Ruth Brown MacArthur | born 1881 | 5 |
| G. C. (George Campbell) Macaulay | 1852–1915 | 4 |
| Rose Macaulay | 1881–1958 | 3 |
| Macaulay, Thomas Babington Macaulay, Baron | 1800–1859 | 14 |
| Alexander Macbain | 1855–1907 | 1 |
| R. G. (Roderick George) MacBeth | 1858–1934 | 1 |
| James MacCaffrey | 1875–1935 | 2 |
| Denis Florence MacCarthy | 1817–1882 | 5 |
| Desmond MacCarthy | 1877–1952 | 1 |
| Clay MacCauley | 1843–1925 | 1 |
| Porter Lander MacClintock | 1873–1939 | 1 |
| William Darnall MacClintock | 1858–1936 | 1 |
| Victor MacClure | 1887–1963 | 1 |
| Malcolm MacColl | 1831–1907 | 1 |
| J. A. (John Arnott) MacCulloch | 1868–1950 | 1 |
| David Macdill | 1826–1903 | 1 |
| George MacDonald | 1824–1905 | 66 |
| John A. (John Alexander) MacDonald | 1846–1922 | 1 |
| Daniel Trembly MacDougal | 1865–1958 | 1 |
| Edward MacDowell | 1860–1908 | 1 |
| John R. (John Ross) Macduff | 1818–1895 | 2 |
| Bernarr Macfadden | 1868–1955 | 1 |
| Alexander Macfarlane | 1851–1913 | 2 |