| Kirchner, Gustav | Gustav Kirchner (Gustav Kirchner) | Actor, Director | 1900 - 1926 | 16 | |
| Kudelka, Auguste | Auguste Kudelka (Auguste Kudelka) | Actor | 1911 | 1 | |
| Klein, Lotte | Lotte Klein (Lotte Klein) | Actor | 1911 - 1953 | 4 | |
| König, Elisabeth | Elisabeth König (Elisabeth König) | Actor | 1911 - 1913 | 3 | |
| Kubitz, Dora | Dora Kubitz (Dora Kubitz) | Actor | 1913 | 1 | |
| Kießling, Johanna | Johanna Kießling (Johanna Kießling) | Actor | 1912 | 1 | |
| Krüger-Michaelis, Melanie | Melanie Krüger-Michaelis (Melanie Krüger-Michaelis) | Actor | 1913 | 1 | |
| Keller, Rudolf | Rudolf Keller (Rudolf Keller) | Actor | 1913 | 1 | |
| Kempin, Kurt | Kurt Kempin (Kurt Kempin) | Designer | 1913 - 1917 | 12 | |
| Kuenzer, Adolf | Adolf Kuenzer (Adolf Kuenzer) | Actor | 1913 | 1 | |
| Kräger, August | August Kräger (August Kräger) | Actor | 1913 | 1 | |
| Kroczak, Emil | Emil Kroczak (Emil Kroczak) | Actor | 1913 - 1916 | 4 | |
| Keller, Lilli | Lilli Keller (Lilli Keller) | Actor | 1913 | 1 | |
| Karchow, Ernst Günther | Ernst Günther Karchow (Ernst Günther Karchow) | Actor | 1913 - 1933 | 4 | |
| Kernic, Anka | Anka Kernic (Anka Kernic) | Actor | 1909 - 1918 | 6 | |
| Kramer, Ernst | Ernst Kramer (Ernst Kramer) | Actor | 1913 - 1914 | 2 | |
| Kiefer, Frieda | Frieda Kiefer (Frieda Kiefer) | Actor | 1913 - 1914 | 2 | |
| Kalbeck, Paul | Paul Kalbeck (Paul Kalbeck) | Actor, Director | 1913 - 1946 | 2 | |
| Knelke, Gerte | Gerte Knelke (Gerte Knelke) | Actor | 1913 | 1 | |
| Klein-Rohden, Rudolf | Rudolf Klein-Rohden | Actor | 1898 - 1914 | 5 | |
| Kessell, Nanny | Nanny Kessell (Nanny Kessell) | Actor | 1914 | 1 | |
| Keppler, Ernst | Ernst Keppler (Ernst Keppler) | Actor | 1919 - 1927 | 3 | |
| Kuhn, Marga | Marga Kuhn (Marga Kuhn) | Actor | 1914 | 1 | |
| Krause, Mila | Mila Krause (Mila Krause) | Actor | 1914 | 1 | |
| Kraus, Hans Adalbert | Hans-Adalbert Kraus (Hans Adalbert Kraus) | Actor | 1932 - 1961 | 6 | |
| Köllner, Herbert | Herbert Köllner (Herbert Köllner) | Actor | 1914 - 1960 | 2 | |
| Koßwig, Curt | Curt Koßwig (Curt Koßwig) | Actor | 1914 | 2 | |
| Krause, Charlotte | Charlotte Krause (Charlotte Krause) | Actor | 1914 - 1928 | 5 | |
| Koch, Maria | Maria Koch (Maria Koch) | Actor | 1913 - 1914 | 2 | |
| Krauß, Ingo | Ingo Krauß (Ingo Krauß) | Actor, Director | 1906 - 1922 | 7 | |
| Keßler, Hugo | Hugo Keßler (Hugo Keßler) | Actor | 1915 - 1931 | 5 | |
| Kaufmann, Martha | Martha Kaufmann (Martha Kaufmann) | Actor | 1915 - 1918 | 3 | |
| Körner, Lothar | Lothar Körner (Lothar Körner) | Actor | 1915 - 1925 | 26 | |
| König, Gisela | Gisela König (Gisela König) | Actor | 1917 - 1921 | 3 | |
| Kahle, Elisabeth | Elisabeth Kahle (Elisabeth Kahle) | Actor | 1915 | 2 | |
| Klinder, Lotte | Lotte Klinder (Lotte Klinder) | Actor | 1915 | 1 | |
| Kirchberger, Leo | Leo Kirchberger (Leo Kirchberger) | Actor | 1915 - 1918 | 2 | |
| Kleiner, Oskar | Oskar Kleiner (Oskar Kleiner) | Actor | 1915 | 1 | |
| Kämmerer, Karl | Karl Kämmerer (Karl Kämmerer) | Actor | 1915 | 1 | |
| Kaiser, Lola | Lola Kaiser (Lola Kaiser) | Actor | 1915 | 1 | |
| Korb, Ludwig | Ludwig Korb (Ludwig Korb) | Actor | 1915 - 1917 | 2 | |
| Keßler, Eva | Eva Keßler (Eva Keßler) | Actor | 1915 | 1 | |
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