| Kopperl, Helga | Helga Kopperl | Actor | 1975 | 1 | |
| Kreißel, Richard | Richard Kreißel | Actor, Director | 1895 | 2 | |
| Kleiber, Hermine | Hermine Kleiber | Actor | 1895 | 1 | |
| Kniel, Ernst | Ernst Kniel | Actor | 1895 | 2 | |
| Kühn, Bernhard | Bernhard Kühn | Actor | 1894 – 1901 | 3 | |
| Kahler, Ernst | Ernst Kahler | Actor | 1975 | 1 | |
| Kuhnert, Hans | Hans Kuhnert | Actor | 1896 | 1 | |
| Kugelberg, Fritz | Fritz Kugelberg | Actor | 1893 | 1 | |
| Kröger, Dora | Dora Kröger | Actor | 1893 | 2 | |
| Kaiser, Paul | Paul Kaiser | Actor | 1893 – 1906 | 3 | |
| Klapper, Jürgen | Jürgen Klapper | Costume Designer, Designer | 1975 | 2 | |
| Kröter, Anton | Anton Kröter | Actor | 1895 | 1 | |
| Kuska, Horst | Horst Kuska | Actor | 1975 | 1 | |
| Kalos, Dionysis | Dionysis Kalos | Actor | 1966 – 1975 | 6 | |
| Kapatos , Stelios | Stelios Kapatos | Actor | 1975 – 1986 | 6 | |
| Karpeta , Eleni | Eleni Karpeta | Actor | 1975 | 4 | |
| Kourou, Gianna | Gianna Kourou | Actor | 1975 | 4 | |
| Krämer, Anfried | Anfried Krämer | Actor | 1961 – 1962 | 3 | |
| Kersten, Heinz | Heinz Kersten | Actor | 1975 | 5 | |
| Kloke, Eberhard | Eberhard Kloke | Musical Director | 1975 | 1 | |
| Kultala, Pentti | Pentti Kultala | Actor | 1975 | 1 | |
| Kulundžić, Josip | Josip Kulundžić | Translator | 1940 – 1996 | 8 | |
| Kriley, Robert | Robert Kriley | Actor | 1979 | 1 | |
| Kozel'kova, E. | E. Kozel'kova | Actor | 1979 | 1 | |
| Kružkov, A | A Kružkov | Actor | 1979 | 1 | |
| Kappner, Hr. | Hr. Kappner | Actor | 1878 – 1880 | 2 | |
| Kratze, Hr. | Hr. Kratze | Actor | 1878 | 1 | |
| Kvaša, Igor | Igor Kvaša | Actor | 1979 | 2 | |
| Kitaev, M. | M. Kitaev | Designer | 1979 | 1 | |
| Kallergis, Lykourgos | Lykourgos Kallergis | Actor, Director | 1939 – 1979 | 38 | |
| Kuntzsch, Joachim | Joachim Kuntzsch | Musician | 1975 | 3 | |
| Kirkman, Penny | Penny Kirkman | Actor | 1973 – 1977 | 2 | |
| Kenrick, Margot | Margot Kenrick | Actor | 1977 | 1 | |
| Kvaran , Ævar, R. | Ævar R. Kvaran | Actor | 1943 | 6 | |
| Kjær, Diana | Diana Kjær | Actor | 1975 | 1 | |
| Kernell, Linda | Linda Kernell | Actor | 1979 | 1 | |
| Kinding, Thomas | Thomas Kinding | Designer, Translator | 1961 | 2 | |
| Kutz , Kazimierz | Kazimierz Kutz | Director | 1979 | 1 | |
| Kołodziej , Marian | Marian Kołodziej | Designer | 1975 | 2 | |
| Kochańczyk, Marcel | Marcel Kochańczyk | Designer, Director | 1978 | 4 | |
| Kozlik, Al | Al Kozlik | Actor | 1979 | 1 | |
| Kroupa, Susan | Susan Kroupa | Actor | 1979 | 1 | |
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