| Kiefer, Heinrich, | Heinrich Kiefer | Actor | 1900 | 2 | |
| Kiedaisch, Fritz, | Fritz Kiedaisch | Actor | 1903 | 2 | |
| Krachler, Rosa, | Rosa Krachler | Actor | 1903 | 2 | |
| Kaiser, Frk., | Frk. Kaiser | Actor | 1906 – 1908 | 2 | |
| Koch, Walter, | Walter Koch | Actor, Conductor | 1905 | 2 | |
| Kautsky, Ferdinand, | Ferdinand Kautsky | Actor | 1905 – 1913 | 2 | |
| Kempter, -, | - Kempter | Actor | 1905 | 2 | |
| Kolbe, -, | - Kolbe | Actor | 1906 | 2 | |
| Kwast, Marianne, | Marianne Kwast | Actor | 1907 | 2 | |
| Kroneck, Hans, | Hans Kroneck | Actor | 1906 – 1908 | 2 | |
| Kögel, Josef, | Josef Kögel | Actor | 1909 – 1910 | 2 | |
| Kny, Johanna, | Johanna Kny | Actor | 1909 – 1912 | 2 | |
| Kruse, Willy, | Willy Kruse | Actor | 1911 – 1926 | 2 | |
| Krampff, Ernst, | Ernst Krampff | Actor | 1905 | 2 | |
| Körner-Hofmann, Elisabeth, | Elisabeth Körner-Hofmann | Actor | 1911 – 1912 | 2 | |
| Kramer, Ernst, | Ernst Kramer | Actor | 1913 – 1914 | 2 | |
| Kiefer, Frieda, | Frieda Kiefer | Actor | 1913 – 1914 | 2 | |
| Kalbeck, Paul, | Paul Kalbeck | Actor, Director | 1913 | 2 | |
| Köllner, Herbert, | Herbert Köllner | Actor | 1914 | 2 | |
| Koßwig, Curt, | Curt Koßwig | Actor | 1914 | 2 | |
| Koch, Maria, | Maria Koch | Actor | 1913 – 1916 | 2 | |
| Kahle, Elisabeth, | Elisabeth Kahle | Actor | 1915 | 2 | |
| Kirchberger, Leo, | Leo Kirchberger | Actor | 1915 | 2 | |
| Korb, Ludwig, | Ludwig Korb | Actor | 1915 | 2 | |
| Klossowski, Erich, | Erich Klossowski | Costume Designer, Designer | 1915 | 2 | |
| Kaiser-Titz, Erich, | Erich Kaiser-Titz | Actor | 1915 | 2 | |
| Kirschner, -, | - Kirschner | Costume Designer | 1916 | 2 | |
| Koehler, Albert, | Albert Koehler | Actor, Director | 1916 | 2 | |
| Knapp, Cornelia, | Cornelia Knapp | Actor | 1916 | 2 | |
| Koch, Betty, | Betty Koch | Actor | 1917 | 2 | |
| Kroll, Felix, | Felix Kroll | Actor | 1918 | 2 | |
| Krämer, Albert, | Albert Krämer | Actor | 1918 | 2 | |
| Krahn, Maria, | Maria Krahn | Actor | 1918 | 2 | |
| Kock, Katharina, | Katharina Kock | Actor | 1918 – 1919 | 2 | |
| Kurz, Werner, | Werner Kurz | Actor | 1918 | 2 | |
| Kolb, Hertha, | Hertha Kolb | Actor | 1921 – 1922 | 2 | |
| Kulisch, Walter, | Walter Kulisch | Actor | 1913 | 2 | |
| Krüger, Otto, | Otto Krüger | Actor | 1919 – 1925 | 2 | |
| Krieger, Gustav, | Gustav Krieger | Actor | 1919 – 1925 | 2 | |
| Klühe, Erich, | Erich Klühe | Actor | 1919 | 2 | |
| Körner, Emma, | Emma Körner | Actor | 1920 | 2 | |
| Kner, Hermann, | Hermann Kner | Actor | 1917 – 1921 | 2 | |
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