| Karnowsky, Friedrich | Friedrich Karnowsky | Actor | 1919 | 2 | |
| Körner, Ludwig | Ludwig Körner | Actor | 1919 | 1 | |
| Klühe, Erich, | Erich Klühe | Actor | 1919 - 1920 | 2 | |
| Kalischer, Margarethe, | Margarethe Kalischer | Actor | 1919 - 1923 | 2 | |
| Kramer, Josef, | Josef Kramer | Actor | 1919 - 1924 | 6 | |
| Krüger, Otto, | Otto Krüger | Actor | 1919 - 1925 | 2 | |
| Krieger, Gustav, | Gustav Krieger | Actor | 1919 - 1925 | 2 | |
| Keppler, Ernst, | Ernst Keppler | Actor | 1919 - 1927 | 3 | |
| Kralj, Emil, | Emil Kralj | Actor, Director | 1919 - 1929 | 4 | |
| Kasten, Thea, | Thea Kasten | Actor | 1919 - 1931 | 3 | |
| Kranich, Friedrich, | Friedrich Kranich | Designer | 1919 - 1933 | 2 | |
| Kolkwitz, Paul, | Paul Kolkwitz | Actor, Director | 1919 - 1934 | 3 | |
| Krüger, Charlotte, | Charlotte Krüger | Actor | 1919 - 1943 | 3 | |
| Klimm, Eugen, | Eugen Klimm | Actor | 1919 - 1956 | 14 | |
| Krauß, Doris, | Doris Krauß | Actor | 1920 | 1 | |
| Körber, M., | M. Körber | Actor | 1920 | 1 | |
| Kramer, Arpad, | Arpad Kramer | Actor | 1920 | 1 | |
| Kelling, Walter, | Walter Kelling | Actor | 1920 | 1 | |
| Kardan, Alexander, | Alexander Kardan | Actor | 1920 | 1 | |
| Klokow, Till, | Till Klokow | Actor | 1920 | 1 | |
| Kabók, Győző, | Győző Kabók | Actor | 1920 | 1 | |
| Klaniczay, Gyula, | Gyula Klaniczay | Actor | 1920 | 1 | |
| Kvaran, Ragnar E., | Ragnar E. Kvaran (Ragnar E. Kvaran) | Actor | 1920 | 1 | |
| Kronbauerová, Jarmila | Jarmila Kronbauerová | Actor | 1920 | 1 | |
| Kaválek, Josef | Josef Kaválek | Actor | 1920 | 1 | |
| Ker, Paul | Paul Ker | Actor | 1920 | 1 | |
| Károlyi, János | János Károlyi | Actor | 1920 | 1 | |
| Kochanowicz, Jan | Jan Kochanowicz | Actor | 1920 | 1 | |
| Karska, Leontyna | Leontyna Karska | Actor | 1920 | 1 | |
| Kelt, John | John Kelt | Actor | 1920 | 1 | |
| Krasnowiecki, Władysław | Władysław Krasnowiecki | Actor | 1920 - 1921 | 2 | |
| Kirilov, N.Gh. | N.Gh. Kirilov | Actor | 1920 - 1922 | 2 | |
| Köppke, Margarethe, | Margarethe Köppke | Actor | 1920 - 1923 | 3 | |
| Körner, Emma, | Emma Körner | Actor | 1920 - 1924 | 2 | |
| Kåge, Ivar, | Ivar Kåge | Actor | 1920 - 1927 | 3 | |
| Kreysern, Eberhard | Eberhard Kreysern | Actor | 1920 - 1928 | 2 | |
| Kersten, Anni, | Anni Kersten | Actor | 1920 - 1932 | 4 | |
| Kohout, Eduard | Eduard Kohout | Actor | 1920 - 1943 | 2 | |
| Köhler, Käthe, | Käthe Köhler | Actor | 1921 | 1 | |
| Koreny-Scheck, Dora, | Dora Koreny-Scheck | Actor | 1921 | 1 | |
| Kollberg, Eugen, | Eugen Kollberg | Actor | 1921 | 1 | |
| Kreibich, Elsa, | Elsa Kreibich | Actor | 1921 | 1 | |
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