| Kabisch, Adalbert | Adalbert Kabisch | Actor | 1915 | 1 | |
| Koch, Karl | Karl Koch | Actor | 1915 | 1 | |
| Klotz, Adolf | Adolf Klotz | Actor | 1916 | 1 | |
| Kleinert, Robert | Robert Kleinert | Actor | 1916 - 1955 | 8 | |
| Kirschner, - | - Kirschner | Costume Designer | 1916 | 2 | |
| Kraus, Rudolf | Rudolf Kraus | Actor | 1916 | 1 | |
| Koehler, Albert | Albert Koehler | Actor, Director | 1916 | 2 | |
| Knapp, Cornelia | Cornelia Knapp | Actor | 1916 - 1917 | 2 | |
| Kühne, Felix | Felix Kühne | Actor | 1917 | 1 | |
| Kaulsky, H. | H. Kaulsky | Designer | 1917 | 1 | |
| Koch, Betty | Betty Koch | Actor | 1917 - 1921 | 2 | |
| Klein, Pia | Pia Klein | Actor | 1917 | 1 | |
| Kočonda, Ljerka | Ljerka Kočonda | Actor | 1917 | 1 | |
| Kroll, Felix | Felix Kroll | Actor | 1918 | 2 | |
| Krämer, Albert | Albert Krämer | Actor | 1918 - 1923 | 2 | |
| Krulle, Charlotte | Charlotte Krulle | Actor | 1918 | 3 | |
| Knörer, Willi | Willi Knörer | Actor | 1918 | 1 | |
| Kronacher, Dr. Alwin | Alwin Kronacher (Dr. Alwin Kronacher) | Director | 1911 - 1925 | 9 | |
| Kock, Katharina | Katharina Kock | Actor | 1918 - 1919 | 2 | |
| Kurz, Werner | Werner Kurz | Actor | 1918 | 2 | |
| Kolkwitz, Paul | Paul Kolkwitz | Actor, Director | 1919 - 1934 | 3 | |
| Koch, Hilde | Hilde Koch | Actor | 1919 | 1 | |
| Köhler, Käthe | Käthe Köhler | Actor | 1921 | 1 | |
| Kasten, Thea | Thea Kasten | Actor | 1919 - 1931 | 3 | |
| Kolb, Hertha | Hertha Kolb | Actor | 1921 - 1922 | 2 | |
| Kulisch, Walter | Walter Kulisch | Actor | 1913 - 1919 | 2 | |
| Kaulhausen, Mira | Mira Kaulhausen | Actor | 1919 | 1 | |
| Kupfer, Marianne | Marianne Kupfer | Actor | 1919 | 1 | |
| Korolanyi, Irene | Irene Korolanyi | Actor | 1919 | 1 | |
| Krüger, Otto | Otto Krüger | Actor | 1919 - 1925 | 2 | |
| Krieger, Gustav | Gustav Krieger | Actor | 1919 - 1925 | 2 | |
| Karsten, Marthe | Marthe Karsten | Actor | 1919 | 1 | |
| Klühe, Erich | Erich Klühe | Actor | 1919 - 1920 | 2 | |
| Krauß, Doris | Doris Krauß | Actor | 1920 | 1 | |
| Körner, Emma | Emma Körner | Actor | 1920 - 1924 | 2 | |
| Körber, M. | M. Körber | Actor | 1920 | 1 | |
| Kramer, Arpad | Arpad Kramer | Actor | 1920 | 1 | |
| Kelling, Walter | Walter Kelling | Actor | 1920 | 1 | |
| Kersten, Anni | Anni Kersten | Actor | 1920 - 1932 | 4 | |
| Köppke, Margarethe | Margarethe Köppke | Actor | 1920 - 1923 | 3 | |
| Kardan, Alexander | Alexander Kardan | Actor | 1920 | 1 | |
| Klokow, Till | Till Klokow | Actor | 1920 | 1 | |
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