| Edward Manley | born 1867 | 1 |
| Mrs. (Mary de la Rivière) Manley | 1663–1724 | 1 |
| Harold P. (Harold Phillips) Manly | born 1887 | 1 |
| John Matthews Manly | 1865–1940 | 1 |
| William Lewis Manly | 1820–1903 | 1 |
| Franziska Mann | 1859–1927 | 1 |
| Henry Mann | 1848–1915 | 1 |
| Mary E. Mann | 1848–1929 | 1 |
| Mathilde Mann | 1859–1925 | 1 |
| Thomas Mann | 1875–1955 | 4 |
| J. Hartley Manners | 1870–1928 | 1 |
| Otto Manninen | 1872–1950 | 1 |
| Anne Manning | 1807–1879 | 2 |
| Henry Parker Manning | 1859–1956 | 1 |
| Emil Mannstén | 1873–1944 | 1 |
| Katherine Mansfield | 1888–1923 | 2 |
| M. F. (Milburg Francisco) Mansfield | born 1871 | 2 |
| Paolo Mantegazza | 1831–1910 | 1 |
| Niilo Mantere | 1870–1954 | 1 |
| Victor Mapes | 1870–1943 | 1 |
| Auguste Maquet | 1813–1888 | 36 |
| Annie Russell Marble | 1864–1936 | 1 |
| Marbot, Jean-Baptiste-Antoine-Marcelin, baron de | 1782–1854 | 1 |
| Vito Marcantonio | 1902–1954 | 1 |
| Jeanne Marcel | born 1832 | 1 |
| March, Francis A., Jr. | 1863–1928 | 2 |
| Bessie Marchant | 1862–1941 | 2 |
| Marchant, James, Sir | 1867–1956 | 2 |
| Max Marcin | 1879–1948 | 1 |
| Isaac Frederick Marcosson | 1876–1961 | 3 |
| Paul Marcoy | 1815–1888 | 1 |
| Emperor of Rome Marcus Aurelius | 121–180 | 4 |
| Randolph B. (Randolph Barnes) Marcy | 1812–1887 | 1 |
| Orison Swett Marden | 1848–1924 | 6 |
| Marden, Thomas Owen, Sir | born 1866 | 1 |
| R. R. (Robert Ranulph) Marett | 1866–1943 | 1 |
| W. H. (William Henry) Margetson | 1861–1940 | 1 |
| G. (George) Margoliouth | 1853–1924 | 1 |
| Marguerite, Queen, consort of Henry II, King of Navarre | 1492–1549 | 5 |
| Marguerite, Queen, consort of Henry IV, King of France | 1553–1615 | 6 |
| Maria | 1846–1916 | 1 |
| Patricio Mariano | 1877–1935 | 2 |
| F. T. Marinetti | 1876–1944 | 3 |
| Pierre Carlet de Chamblain de Marivaux | 1688–1763 | 1 |
| Paul Mariéton | 1862–1911 | 1 |
| Markham, Clements R. (Clements Robert), Sir | 1830–1916 | 2 |
| Jeannette Augustus Marks | 1875–1964 | 3 |
| Percy Marks | 1891–1956 | 1 |
| Winston K. (Winston Kinney) Marks | 1915–1979 | 1 |
| William Fisher Markwick | 1848–1911 | 1 |
| E. (Eugenie) Marlitt | 1825–1887 | 2 |
| Christopher Marlowe | 1564–1593 | 11 |
| Stephen Marlowe | 1928–2008 | 1 |
| Joseph Marmette | 1844–1895 | 2 |
| Helen Marot | 1865–1940 | 1 |
| John P. (John Phillips) Marquand | 1893–1960 | 1 |
| Don Marquis | 1878–1937 | 4 |
| Thomas Guthrie Marquis | 1864–1936 | 2 |
| Ellen Marriage | 1865–1946 | 28 |
| Frederick Marryat | 1792–1848 | 44 |
| E. (Ethel) Mars | born 1876 | 1 |
| Mademoiselle Mars | 1779–1847 | 2 |
| William Marsden | 1754–1836 | 1 |
| Arthur Richmond Marsh | 1861–1937 | 1 |
| Marsh, Edward Howard, Sir | 1872–1953 | 5 |
| George P. (George Perkins) Marsh | 1801–1882 | 1 |
| Richard Marsh | 1857–1915 | 1 |
| W. Lockwood (William Lockwood) Marsh | 1886–1963 | 1 |
| Edison Marshall | 1894–1967 | 2 |
| Edward Marshall | 1870–1933 | 2 |
| Emma Marshall | 1830–1899 | 1 |
| H. E. (Henrietta Elizabeth) Marshall | 1867–1941 | 2 |
| Marshall, Herbert, R. W. S. | 1841–1913 | 1 |
| J. (John) Marshall | 1845–1915 | 1 |
| John Marshall | 1755–1835 | 5 |
| Logan Marshall | 1884–1937 | 7 |
| Giovanni Marsili | 1727–1795 | 1 |
| Charles L. (Charles Latimer) Marson | 1858–1914 | 1 |
| Arthur de Marsy | 1843–1900 | 1 |
| Frederick Herman Martens | 1874–1932 | 1 |