| Kunos, László | László Kúnos | Translator | 1991 – 2019 | 54 | |
| Koukoulas, Leon, | Leon Koukoulas | Translator | 1921 – 2010 | 91 | |
| Kusuyama, Masao | Masao Kusuyama | Translator | 1925 – 1936 | 7 | |
| Kamel, Youssef | Youssef Kamel | Translator | 2006 | 1 | |
| Kolev, Svetoslav | Svetoslav Kolev | Translator | 1994 – 2008 | 4 | |
| Kirschenstein, Ch. | Ch. Kirschenstein | Translator | 1957 | 1 | |
| Klaus, Rudolf U. | Rudolf U. Klaus | Translator | 1964 | 4 | |
| Klingenfeld, Emma, | Emma Klingenfeld | Translator | 1876 – 2007 | 57 | 1 |
| Kapteyn, F., | F. Kapteyn | Translator | 1894 | 2 | |
| Kapteijn, F., | F. Kapteijn | Translator | 1896 | 3 | |
| Kučera, Karel, | Karel Kučera | Translator | 1899 – 1923 | 5 | |
| Kawecka, Helena, | Helena Kawecka | Translator | 1902 | 1 | |
| Kosterka, Hugo, | Hugo Kosterka | Translator | 1903 | 5 | |
| Kraus, Arnošt, | Arnošt Kraus | Translator | 1904 – 1921 | 11 | |
| Kotljarevski, Stefan Mladenov, | Stefan Mladenov Kotljarevski | Translator | 1904 | 2 | |
| Kempner, Gabriel, | Gabriel Kempner | Translator | 1906 – 1918 | 2 | |
| Klintscharov, Ivan G., | Ivan G. Klintscharov (Ivan G. Klintscharov) | Translator | 1907 | 1 | |
| Kochanowski, Stanisław, | Stanisław Kochanowski | Translator | 1909 | 1 | |
| Kostula, H., | H. Kostula | Translator | 1910 | 1 | |
| Kasprowicz, Jan, | Jan Kasprowicz | Translator | 1910 – 1923 | 8 | |
| Kiran, Hartvig, | Hartvig Kiran | Translator | 1973 – 1996 | 2 | |
| Krausová-Lesná, Milada, | Milada Krausová-Lesná | Translator | 1922 – 1928 | 4 | |
| Krawczykowski, Zbigniew | Zbigniew Krawczykowski | Translator | 1963 – 2011 | 14 | |
| Konuschlieva, Rajna | Rajna Konuschlieva | Translator | 1977 | 3 | |
| Kleijn, Tom | Tom Kleijn | Translator | 1992 – 2008 | 21 | |
| Košak, Vinko | Vinko Košak | Translator | 1928 | 2 | |
| Króliński, Kazimierz | Kazimierz Króliński | Translator | 1913 | 1 | |
| Kastro, Kaiti | Kaiti Kastro | Translator | 1978 | 3 | |
| Kulundžić, Josip | Josip Kulundžić | Translator | 1940 – 1996 | 8 | |
| Kaalø, Sten | Sten Kaalø | Translator | 1981 | 1 | |
| Kontogianni, Rena | Rena Kontogianni | Translator | 1986 – 2006 | 4 | |
| Kidane, Mussie | Mussie Kidane | Translator | 2009 | 1 | |
| Kaňa, Jaroslav | Jaroslav Kaňa | Translator | 1983 | 1 | |
| Kristjánson, Jónas | Jónas Kristjánson | Translator | 1978 | 1 | |
| Knudsen, Erik | Erik Knudsen | Translator | 1976 | 4 | |
| Kyrtzaki, Maria | Maria Kyrtzaki | Translator | 1991 – 1992 | 1 | |
| Kopit, Arthur | Arthur Kopit | Translator | 1982 – 2010 | 9 | |
| Koskinen, Juhani | Juhani Koskinen | Translator | 1980 | 1 | |
| Karanastasis, Nikos | Nikos Karanastasis | Translator | 1994 – 1995 | 1 | |
| Kornfeld, Edna | Edna Kornfeld | Translator | 1966 | 2 | |
| Koefoed, Bjorn | Bjorn Koefoed | Translator | 1966 | 1 | |
| Kokotović, Nikola | Nikola Kokotović | Translator | 1888 | 6 | |
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