| Kriss, Steffy | Steffy Kriss (Steffy Kriss) | Actor | 1904 | 1 | |
| Kacha, Eduard | Eduard Kacha (Eduard Kacha) | Actor | 1904 | 1 | |
| Kaiser, Frk. | Frk. Kaiser (Frk. Kaiser) | Actor | 1906 - 1908 | 2 | |
| Kurth, Adolf | Adolf Kurth (Adolf Kurth) | Actor, Director | 1890 - 1915 | 20 | |
| Klein, Demeter | Demeter Klein (Demeter Klein) | Actor | 1905 | 1 | |
| Kanisch, Edgar | Edgar Kanisch (Edgar Kanisch) | Actor | 1905 | 1 | |
| Kriete, Luise | Luise Kriete (Luise Kriete) | Actor | 1905 - 1911 | 12 | |
| Karthaus, Willi | Willi Karthaus (Willi Karthaus) | Actor | 1905 - 1906 | 4 | |
| Koehne, Marie | Marie Koehne (Marie Koehne) | Actor | 1905 | 1 | |
| Kernic, Annie | Annie Kernic | Actor | 1905 | 1 | |
| Krasa, Rudolf | Rudolf Krasa (Rudolf Krasa) | Actor | 1905 | 1 | |
| Koch, Walter | Walter Koch (Walter Koch) | Actor, Conductor | 1905 - 1925 | 2 | |
| Kautsky, Ferdinand | Ferdinand Kautsky (Ferdinand Kautsky) | Actor | 1905 - 1913 | 2 | |
| Kriß, Stephanie | Stephanie Kriß (Stephanie Kriß) | Actor | 1905 | 1 | |
| Kühne, Leopoldine | Leopoldine Kühne (Leopoldine Kühne) | Actor | 1905 | 1 | |
| Keller, Eugen | Eugen Keller (Eugen Keller) | Actor, Director | 1913 - 1922 | 22 | |
| Kosel, Walter | Walter Kosel (Walter Kosel) | Actor | 1909 - 1919 | 8 | |
| Kolbe, Alexandrine | Alexandrine Kolbe (Alexandrine Kolbe) | Actor | 1905 - 1916 | 4 | |
| Kempter, - | - Kempter (- Kempter) | Actor | 1905 - 1906 | 2 | |
| Kunert, James | James Kunert (James Kunert) | Actor | 1906 | 1 | |
| Klein, Julius | Julius Klein (Julius Klein) | Designer | 1906 - 1916 | 7 | |
| Kolbe, - | - Kolbe (- Kolbe) | Actor | 1906 - 1916 | 2 | |
| Knaack, Carl | Carl Knaack (Carl Knaack) | Actor | 1906 | 1 | |
| König, Rosa | Rosa König | Actor | 1906 | 1 | |
| Kraack, Mr. | Mr. Kraack (Mr. Kraack) | Actor | 1906 - 1915 | 3 | |
| Klinder, Betty | Betty Klinder (Betty Klinder) | Actor | 1906 - 1918 | 12 | |
| Kühne, Max | Max Kühne (Max Kühne) | Actor | 1906 - 1932 | 22 | |
| Kühne, Alfred | Alfred Kühne (Alfred Kühne) | Actor | 1906 - 1913 | 5 | |
| Koch, Georg August | Georg August Koch (Georg August Koch) | Actor | 1913 - 1942 | 3 | |
| Kwast, Marianne | Marianne Kwast (Marianne Kwast) | Actor | 1907 | 2 | |
| Kaufmann, Paul | Paul Kaufmann (Paul Kaufmann) | Actor | 1909 - 1927 | 11 | |
| Kerkow, Mascha | Mascha Kerkow (Mascha Kerkow) | Actor | 1907 | 1 | |
| Kövner, Lothar | Lothar Kövner (Lothar Kövner) | Actor | 1907 | 1 | |
| Kurz, Emilie | Emilie Kurz (Emilie Kurz) | Actor | 1907 - 1934 | 3 | |
| Kempner, Traute | Traute Kempner (Traute Kempner) | Actor | 1907 | 1 | |
| Kupfer, Else | Else Kupfer (Else Kupfer) | Actor | 1907 | 1 | |
| Krall, Wilhelmine | Wilhelmine Krall (Wilhelmine Krall) | Actor | 1918 - 1920 | 3 | |
| Kutschera, Tilly | Tilly Kutschera (Tilly Kutschera) | Actor | 1915 - 1919 | 4 | |
| Kosch, Emma | Emma Kosch (Emma Kosch) | Actor | 1918 - 1919 | 3 | |
| Klodnitzky, Octav | Octav Klodnitzky (Octav Klodnitzky) | Actor | 1907 | 1 | |
| Koster, Franz | Franz Koster | Actor | 1894 - 1908 | 4 | |
| Kauer, Franz | Franz Kauer (Franz Kauer) | Actor, Director | 1908 - 1915 | 13 | |
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