| Edward Payson Roe | 1838–1888 | 19 |
| Frederick William Roe | born 1874 | 1 |
| Vingie E. (Vingie Eve) Roe | 1879–1958 | 1 |
| Erwin W. (Erwin William) Roessler | 1880–1926 | 1 |
| Charles Roger | born 1819 | 1 |
| Charles Rogers | 1825–1890 | 7 |
| Henry Rogers | 1806–1877 | 2 |
| Henry Raymond Rogers | 1822–1901 | 1 |
| Hubert Rogers | 1898–1982 | 1 |
| James E. Thorold (James Edwin Thorold) Rogers | 1823–1890 | 1 |
| L. W. (Louis William) Rogers | 1859–1953 | 1 |
| Samuel Rogers | 1763–1855 | 1 |
| Walter S. (Walter Stanton) Rogers | 1870–1937 | 5 |
| Will Rogers | 1879–1935 | 1 |
| Peter Mark Roget | 1779–1869 | 2 |
| Gerhard Rohlfs | 1831–1896 | 5 |
| Sax Rohmer | 1883–1959 | 14 |
| Josep Roig i Raventós | 1883–1966 | 2 |
| Henriette Roland Holst-Van der Schalk | 1869–1952 | 1 |
| Romain Rolland | 1866–1944 | 5 |
| T. W. (Thomas William) Rolleston | 1857–1920 | 3 |
| Francis Rolt-Wheeler | 1876–1960 | 5 |
| George John Romanes | 1848–1894 | 5 |
| Cecil Francis Romer | born 1869 | 1 |
| Romero de Terreros, Manuel, marqués de San Francisco | 1880–1968 | 1 |
| George A. Romero | 1940–2017 | 1 |
| Carlos Ronquillo y Valdez | 1877–1941 | 1 |
| Mathilda Roos | 1852–1908 | 1 |
| Franklin D. (Franklin Delano) Roosevelt | 1882–1945 | 3 |
| Kermit Roosevelt | 1889–1943 | 1 |
| Theodore Roosevelt | 1858–1919 | 22 |
| Wyn Roosevelt | born 1870 | 2 |
| Elihu Root | 1845–1937 | 1 |
| Robert K. (Robert Kilburn) Root | 1877–1950 | 1 |
| S. T. Rorer | 1849–1937 | 3 |
| David Rorie | 1867–1946 | 1 |
| A. J. (Aaron Joshua) Rosanoff | 1878–1943 | 1 |
| Tekla Roschier | 1870–1928 | 2 |
| Edward Stanley Roscoe | 1849–1932 | 1 |
| Thomas Roscoe | 1791–1871 | 1 |
| William Roscoe | 1753–1831 | 3 |
| Achilles Rose | 1839–1916 | 1 |
| Geoffrey Keith Rose | born 1889 | 1 |
| J. Holland (John Holland) Rose | 1855–1942 | 5 |
| Mary Swartz Rose | 1874–1941 | 1 |
| R. Selden (Robert Selden) Rose | 1888–1964 | 2 |
| William Stewart Rose | 1775–1843 | 1 |
| Peter Rosegger | 1843–1918 | 1 |
| S. (Simon) Rosenbaum | 1877–1950 | 1 |
| Christian Rosencreutz | 1586–1654 | 1 |
| Morris Rosenfeld | 1862–1923 | 1 |
| Paul Rosenfeld | 1890–1946 | 1 |
| J. G. (Joseph George) Rosengarten | 1835–1921 | 1 |
| Edmund G. (Edmund Gibson) Ross | 1826–1907 | 1 |
| F. A. (Frederick Augustus) Ross | 1796–1883 | 1 |
| Gordon Ross | 1873–1946 | 1 |
| James Ross | 1759–1831 | 1 |
| Janet Ross | 1842–1927 | 1 |
| John Wilson Ross | 1818–1887 | 1 |
| Ross, John, Sir | 1777–1856 | 1 |
| Martin Ross | 1862–1915 | 2 |
| Robert Baldwin Ross | 1869–1918 | 5 |
| Irving C. (Irving Collins) Rosse | 1842–1901 | 1 |
| Christina Georgina Rossetti | 1830–1894 | 2 |
| Dante Gabriel Rossetti | 1828–1882 | 2 |
| Lucy Madox Brown Rossetti | 1843–1894 | 1 |
| William Michael Rossetti | 1829–1919 | 5 |
| Adolfo Rossi | 1857–1921 | 1 |
| Gioacchino Rossini | 1792–1868 | 1 |
| Edmond Rostand | 1868–1918 | 4 |
| Edward Roth | 1826–1911 | 1 |
| H. Ling (Henry Ling) Roth | 1855–1925 | 1 |
| Herb Roth | 1887–1953 | 1 |
| Agnes Rothery | 1888–1954 | 1 |
| Fred Rothwell | 1869–1934 | 2 |
| Louis de Rougemont | 1847–1921 | 1 |
| William Roughead | 1870–1952 | 1 |
| Harry Rountree | born 1878 | 1 |
| Conrad Roure | 1841–1928 | 1 |
| W. H. D. (William Henry Denham) Rouse | 1863–1950 | 1 |