| Klein, Willy, | Willy Klein | Actor, Director | 1906 - 1923 | 3 | |
| Kühne, Max, | Max Kühne | Actor | 1906 - 1932 | 22 | |
| Kotopouli, Marika, | Marika Kotopouli | Actor | 1906 - 1945 | 5 | |
| Kryzova, N. V., | N. V. Kryzova (N. V. Kryzova) | Actor | 1907 | 1 | |
| Kuźmiczówna, Maria, | Maria Kuźmiczówna | Actor | 1907 | 1 | |
| Kühne, -, | - Kühne | Actor | 1907 | 1 | |
| Kwast, Marianne, | Marianne Kwast | Actor | 1907 | 2 | |
| Kerkow, Mascha, | Mascha Kerkow | Actor | 1907 | 1 | |
| Kövner, Lothar, | Lothar Kövner | Actor | 1907 | 1 | |
| Kempner, Traute, | Traute Kempner | Actor | 1907 | 1 | |
| Kupfer, Else, | Else Kupfer | Actor | 1907 | 1 | |
| Klodnitzky, Octav, | Octav Klodnitzky | Actor | 1907 | 1 | |
| Kručiņins, -, | - Kručiņins | Actor | 1907 | 1 | |
| Klintscharov, Ivan G., | Ivan G. Klintscharov (Ivan G. Klintscharov) | Translator | 1907 | 1 | |
| Köllner, Paul, | Paul Köllner | Actor | 1907 | 1 | |
| Kourtelis, (?), | (?) Kourtelis | Actor | 1907 | 3 | |
| Kent, Edgar, | Edgar Kent | Actor | 1907 | 1 | |
| Konrad, Anna | Anna Konrad | Actor | 1907 | 1 | |
| Kruckenberg, Ivan, | Ivan Kruckenberg | Actor | 1907 - 1908 | 2 | |
| Koller, Seline | Seline Koller | Actor | 1907 - 1908 | 2 | |
| Kvartalova, N. | N. Kvartalova | Actor | 1907 - 1910 | 3 | |
| Könyves, Jenő | Jenő Könyves | Actor | 1907 - 1913 | 18 | |
| Knina, Gustav, | Gustav Knina | Designer | 1907 - 1918 | 7 | |
| Koškins, Kristaps, | Kristaps Koškins | Actor, Director | 1907 - 1918 | 10 | |
| Kießling, Käthe, | Käthe Kießling | Actor | 1907 - 1919 | 14 | |
| Kossegg, Therese | Therese Kossegg | Actor | 1907 - 1928 | 4 | |
| Kurz, Emilie, | Emilie Kurz | Actor | 1907 - 1934 | 3 | |
| Koht, Thorvald, | Thorvald Koht | Actor, Director | 1907 - 1938 | 10 | |
| Kenmore, Octavia, | Octavia Kenmore | Actor | 1907 - 1942 | 122 | |
| Kiroff, S, | S Kiroff | Actor | 1908 | 1 | |
| Körner, Eduard, | Eduard Körner | Actor | 1908 | 1 | |
| Körner, -, | - Körner | Actor | 1908 | 1 | |
| Karlshofer, Mr., | Mr. Karlshofer | Actor | 1908 | 1 | |
| König, Toni, | Toni König | Actor | 1908 | 1 | |
| Kaucká, Juliana, | Juliana Kaucká | Actor | 1908 | 1 | |
| Kal´manson, M., | M. Kal´manson | Designer | 1908 | 1 | |
| Kachalov, Vasily, | Vasily Kachalov | Actor | 1908 | 1 | |
| Krysińska, Faustyna, | Faustyna Krysińska | Actor | 1908 | 1 | |
| Keefe, Belle, | Belle Keefe | Actor | 1908 | 1 | |
| Korzeniewska, Józefa, | Józefa Korzeniewska | Actor | 1908 | 1 | |
| Kasparová, Klára, | Klára Kasparová | Actor | 1908 | 1 | |
| Kennicott, Grace, | Grace Kennicott | Actor | 1908 | 1 | |
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