| C. (Cornelis) Koppenol | 1865–1946 | 1 |
| Charles James Korinek | born 1880 | 1 |
| Vladimir Galaktionovich Korolenko | 1853–1921 | — |
| Alfred Korzybski | 1879–1950 | 1 |
| Veikko Antero Koskenniemi | 1885–1962 | 7 |
| Kaarlo Koskimies | 1851–1918 | 3 |
| Lajos Kossuth | 1802–1894 | 1 |
| S. S. (Samuel Solomonovitch) Koteliansky | 1880–1955 | 1 |
| August von Kotzebue | 1761–1819 | 2 |
| Otto von Kotzebue | 1787–1846 | 2 |
| Aarni Kouta | 1884–1924 | 2 |
| R. von (Richard) Krafft-Ebing | 1840–1902 | 1 |
| Kaarlo Kramsu | 1855–1895 | 1 |
| Laura Fry Kready | born 1874 | 1 |
| Henry Edward Krehbiel | 1854–1923 | 6 |
| Fritz Kreisler | 1875–1962 | 1 |
| Mite Kremnitz | 1852–1916 | 1 |
| Roy G. Krenkel | 1918–1983 | 1 |
| Ivan H. Krestanoff | 1890–1966 | 1 |
| Vs. Vl. (Vsevolod Vladimirovich) Krestovskii | 1840–1895 | — |
| Albert Kretschmer | 1825–1891 | 1 |
| Friedrich Reinhold Kreutzwald | 1803–1882 | 2 |
| Alfred Kreymborg | 1883–1966 | 1 |
| J. (Jiddu) Krishnamurti | 1895–1986 | 1 |
| P. H. (Pieter Hendrick) Kritzinger | 1870–1930 | 1 |
| Charles Frederick Kroeh | 1846–1928 | 1 |
| Christian Krogh | born 1852 | 1 |
| Helmi Krohn | 1871–1967 | 2 |
| Julius Krohn | 1835–1888 | 5 |
| Ed Krol | born 1951 | 1 |
| Joseph Martin Kronheim | 1810–1896 | 5 |
| Kropotkin, Petr Alekseevich, kniaz | 1842–1921 | 2 |
| Joseph Wood Krutch | 1893–1970 | 1 |
| A. C. Kuiper | 1860–1934 | 2 |
| Juho Kujala | 1878–1919 | 1 |
| George Frederick Kunz | 1856–1932 | 1 |
| A. I. (Aleksandr Ivanovich) Kuprin | 1870–1938 | 1 |
| Matti Kurikka | 1863–1915 | 6 |
| Thomas Kyd | 1558–1594 | 1 |
| Galloway Kyle | born 1871 | 1 |
| Peter B. (Peter Bernard) Kyne | 1880–1957 | 8 |
| Aurél Kárpáti | 1884–1963 | 1 |
| Hilda Maria Käkikoski | 1863–1912 | 1 |
| Ludwig Ritter von Köchel | 1800–1877 | 2 |
| Reinhold Köhler | 1830–1892 | 1 |
| Alfred Köppen | 1869–1940 | 1 |
| Julius Köstlin | 1826–1902 | 1 |
| A. G. K. (Alfred Guy Kingan) L'Estrange | 1832–1915 | 2 |
| Henri de La Blanchère | 1821–1880 | 1 |
| Jean de La Bruyère | 1645–1696 | 1 |
| Jean de La Brète | 1854–1945 | 1 |
| Henri de La Chaume | born 1861 | 1 |
| Charles-Marie de La Condamine | 1701–1774 | 1 |
| John La Farge | 1835–1910 | 1 |
| Madame de (Marie-Madeleine Pioche de La Vergne) La Fayette | 1634–1693 | 5 |
| Jean de La Fontaine | 1621–1695 | 33 |
| Paul P. de La Gironière | 1797–1862 | 1 |
| Jean-François de La Harpe | 1739–1803 | 2 |
| G. de La Landelle | 1812–1886 | 1 |
| La Mara | 1837–1927 | 2 |
| Ellen N. (Ellen Newbold) La Motte | 1873–1961 | 1 |
| La Motte-Fouqué, Friedrich Heinrich Karl, Freiherr de | 1777–1843 | 6 |
| Isaac de La Peyrère | 1594–1676 | 1 |
| François duc de La Rochefoucauld | 1613–1680 | 2 |
| Marie-Louise-Victoire marquise de La Rochejaquelein | 1772–1857 | 1 |
| Greye La Spina | 1880–1969 | 1 |
| Benjamin La Trobe | 1725–1786 | 1 |
| Madame Henri de La Ville de Mirmont | 1860–1933 | 1 |
| W.F.C. van Laak | 1841–1923 | 1 |
| Eugène Labiche | 1815–1888 | 1 |
| Henry Du Pré Labouchere | 1831–1912 | 1 |
| Édouard Laboulaye | 1811–1883 | 3 |
| Pierre de Lacretelle | 1886–1969 | 1 |
| John Victor Lacroix | born 1882 | 1 |
| Charles John de Lacy | 1856–1930 | 1 |
| Joseph Ladue | 1855–1900 | 1 |
| Lafayette, Marie Joseph Paul Yves Roch Gilbert Du Motier, marquis de | 1757–1834 | 2 |
| R. A. Lafferty | 1914–2002 | 1 |
| André-Daniel Laffon de Ladébat | 1746–1829 | 1 |
| Selma Lagerlöf | 1858–1940 | 6 |