| Kelton, Jane | Jane Kelton | Actor | 1905 | 1 | |
| Kneidinger, Rudolf | Rudolf Kneidinger | Actor | 1905 | 1 | |
| Koll, Carlo | Carlo Koll | Actor | 1905 | 1 | |
| Kroneck, Ludwig | Ludwig Kroneck | Actor | 1905 | 1 | |
| Kilpi, Eero | Eero Kilpi | Actor | 1904 - 1943 | 8 | 1 |
| Kraus, Arnošt | Arnošt Kraus | Translator | 1904 - 1941 | 11 | 1 |
| Kalff, Marie | Marie Kalff | Actor | 1904 - 1928 | 2 | |
| Korn, Gertrud | Gertrud Korn | Actor | 1904 - 1916 | 3 | |
| Kafka, Rudolf | Rudolf Kafka | Actor | 1904 - 1912 | 5 | |
| Kirtschev, Atanas | Atanas Kirtschev | Actor | 1904 - 1909 | 8 | |
| Komissarzhevskaya, Vera F. | Ве́ра Фё́доровна Комиссарже́вская (Vera F. Komissarzhevskaya) | Actor, Producer | 1904 - 1908 | 7 | 14 |
| Korczak-Wesołowski, Zygmunt | Zygmunt Korczak-Wesołowski | Actor | 1904 - 1905 | 2 | |
| Kotljarevski, Stefan Mladenov | Stefan Mladenov Kotljarevski | Translator | 1904 - 1905 | 2 | 1 |
| Kellerd, John E. | John E. Kellerd | Actor | 1904 | 1 | 1 |
| Kingsley, Ariel | Ariel Kingsley | Actor | 1904 | 1 | |
| Konradi, Paul | Paul Konradi | Actor | 1904 | 1 | |
| Kriss, Steffy | Steffy Kriss | Actor | 1904 | 1 | |
| Kacha, Eduard | Eduard Kacha | Actor | 1904 | 1 | |
| Kazimierz, Kamiński | Kamiński Kazimierz | Actor | 1904 | 1 | |
| Kelbey, Gerald A. | Gerald A. Kelbey | Actor | 1904 | 1 | |
| Kenman, Margaret | Margaret Kenman | Actor | 1904 | 1 | 1 |
| Karasińska, Janina (?) | Janina (?) Karasińska | Actor | 1904 | 1 | |
| Kendall, Frk. | Frk. Kendall | Actor | 1904 | 1 | |
| Krajewska, Leonia | Leonia Krajewska | Actor | 1904 | 1 | |
| Kurth, Max | Max Kurth | Actor | 1904 | 1 | |
| Kingsley, Chas | Chas Kingsley | Actor | 1904 | 1 | |
| Knüpfer, Julie | Julie Knüpfer | Actor | 1904 | 1 | |
| Kirsch, Richard | Richard Kirsch | Director | 1904 | 1 | |
| Knudsen, David | David Knudsen | Actor | 1903 - 1950 | 33 | 1 |
| Kosterka, Hugo | Hugo Kosterka | Translator | 1903 - 1947 | 5 | 1 |
| Krančević, Dragomir | Dragomir Krančević | Actor | 1903 - 1934 | 2 | |
| Kunath, Edmund | Edmund Kunath | Actor | 1903 - 1928 | 14 | 1 |
| Kigler, Theodor | Theodor Kigler | Actor | 1903 - 1927 | 20 | |
| Kallenberger, Gustav | Gustav Kallenberger | Actor | 1903 - 1926 | 5 | |
| Kneidinger, Karl | Karl Kneidinger | Actor | 1903 - 1917 | 3 | |
| Kassabov, Dotscho | Dotscho Kassabov | Actor | 1903 - 1915 | 2 | |
| Kwiatkiewicz, Władysław | Władysław Kwiatkiewicz | Actor | 1903 - 1910 | 4 | |
| Kainz, Josef | Josef Kainz | Actor | 1903 - 1910 | 6 | 2 |
| Kliszewski, Antoni | Antoni Kliszewski | Actor | 1903 - 1906 | 2 | |
| Korčagina, E. P. | E. P. Korčagina | Actor | 1903 - 1906 | 2 | |
| Keller, Kurt | Kurt Keller | Actor | 1903 - 1904 | 2 | |
| Karner, Karl | Karl Karner | Actor | 1903 | 1 | |
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