| Henry Morford | 1823–1881 | 1 |
| Antonio de Morga | 1559–1636 | 1 |
| C. Lloyd (Conwy Lloyd) Morgan | 1852–1936 | — |
| J. de (Jacques) Morgan | 1857–1924 | 1 |
| J. H. (John Hartman) Morgan | 1876–1955 | 1 |
| Lewis Henry Morgan | 1818–1881 | 1 |
| Llew Morgan | 1885–1960 | 1 |
| Wallace Morgan | 1875–1948 | 1 |
| Walter Jenks Morgan | 1847–1924 | 1 |
| William Morgan | 1774–1826 | 1 |
| Christian Morgenstern | 1871–1914 | 2 |
| Yasotaro Mori | 1882–1959 | 1 |
| Charles Morice | 1861–1919 | 1 |
| James Cotter Morison | 1832–1888 | 1 |
| William Morison | 1843–1937 | 1 |
| Karl Philipp Moritz | 1756–1793 | 1 |
| Christopher Morley | 1890–1957 | 11 |
| Edith J. (Edith Julia) Morley | 1875–1964 | 1 |
| Harry Morley | 1881–1943 | 1 |
| Henry Morley | 1822–1894 | 64 |
| John Morley | 1838–1923 | 26 |
| Margaret Warner Morley | 1858–1923 | 1 |
| S. Griswold (Sylvanus Griswold) Morley | 1878–1970 | 3 |
| Mornay, Philippe de, seigneur du Plessis-Marly | 1549–1623 | 1 |
| Alexander Morris | 1826–1889 | 1 |
| Charles Morris | 1833–1922 | 12 |
| Charles E. (Charles Eugene) Morris | born 1884 | 1 |
| Clara Morris | 1848–1925 | 1 |
| Corbyn Morris | 1710–1779 | 1 |
| Elisabeth Woodbridge Morris | 1870–1964 | 1 |
| George Pope Morris | 1802–1864 | 1 |
| Gouverneur Morris | 1876–1953 | 6 |
| Harrison S. (Harrison Smith) Morris | 1856–1948 | 4 |
| Kenneth Morris | 1879–1937 | 1 |
| Lucy Leavenworth Wilder Morris | 1865–1935 | 1 |
| May Morris | 1862–1938 | 1 |
| Mowbray Morris | 1847–1911 | 1 |
| Richard Morris | 1833–1894 | 1 |
| William Morris | 1834–1896 | 29 |
| A. J. W. (Alexander James William) Morrison | 1806–1865 | 3 |
| Arthur Morrison | 1863–1945 | 3 |
| Frederic William Morrison | born 1873 | 1 |
| George Ernest Morrison | 1862–1920 | 1 |
| Harry Steele Morrison | born 1880 | 1 |
| John Morrison | born 1856 | 1 |
| John Arch Morrison | 1893–1965 | 1 |
| William Douglas Morrison | 1852–1943 | 1 |
| Honoré Morrow | 1880–1940 | 7 |
| W. C. Morrow | 1854–1923 | 2 |
| Edward Lind Morse | 1857–1923 | 2 |
| Morse, John T., Jr. (John Torrey) | 1840–1937 | 4 |
| Samuel Finley Breese Morse | 1791–1872 | 2 |
| E. D. A. (Edmund Doidge Anderson) Morshead | 1849–1912 | 2 |
| Favell Lee Mortimer | 1802–1878 | 1 |
| Charles Morton | 1716–1799 | 1 |
| Thomas Morton | 1764–1838 | 1 |
| Felix Moscheles | 1833–1917 | 1 |
| Montrose Jonas Moses | 1878–1934 | 7 |
| João Xavier da Mota | 1850–1895 | 1 |
| John Lothrop Motley | 1814–1877 | 102 |
| F. W. (Frederick Walker) Mott | 1853–1926 | 1 |
| Frank Luther Mott | 1886–1964 | — |
| Lewis Freeman Mott | 1863–1941 | 1 |
| Peter Anthony Motteux | 1660–1718 | 6 |
| H. C. G. (Handley Carr Glyn) Moule | 1841–1920 | 3 |
| Thomas Moult | 1893–1974 | — |
| Richard G. (Richard Green) Moulton | 1849–1924 | 2 |
| Mountevans, Edward Ratcliffe Garth Russell Evans, Baron | 1880–1957 | 1 |
| Luís da Silva Mousinho de Albuquerque | 1792–1846 | 1 |
| Sylvester Mowry | 1830–1871 | 1 |
| Helen Miller Moyes | 1881–1979 | 1 |
| John Baron Moyle | 1852–1930 | 1 |
| Wolfgang Amadeus Mozart | 1756–1791 | 3 |
| Jan Vaclav Mrkvicka | 1856–1938 | 1 |
| John Muir | 1838–1914 | 7 |
| M. M. Pattison (Matthew Moncrieff Pattison) Muir | 1848–1931 | 1 |
| Ramsay Muir | 1872–1941 | 1 |
| Ward Muir | 1878–1927 | 1 |
| Muir, William, Sir | 1819–1905 | 1 |
| James F. (James Fullarton) Muirhead | 1853–1934 | 1 |