| Könemund, Hans | Hans Könemund | Costume Designer, Designer | 1961 - 1968 | 3 | |
| Körmendy, János | János Körmendy | Actor | 1900 - 1925 | 3 | |
| Krtičková, Helena | Helena Krtičková | Actor | 1926 - 1933 | 3 | |
| Krüger-Rosée, Lina | Lina Krüger-Rosée | Actor | 1900 - 1902 | 3 | |
| Kloiber, Susanne | Susanne Kloiber | Costume Designer | 1981 - 1996 | 3 | |
| Krug, Katherine | Katherine Krug | Actor | 1928 - 1929 | 3 | |
| Kloster, Ragna | Ragna Kloster | Actor, Choreographer, Dancer | 1928 | 3 | |
| Korhonen, Ossi | Ossi Korhonen | Actor | 1928 - 1930 | 3 | |
| Kappel, Günter | Günter Kappel | Costume Designer | 1956 - 1985 | 3 | |
| König, Hans | Hans König | Actor | 1921 - 1933 | 3 | |
| Kesting, Christian | Christian Kesting | Actor | 1905 - 1911 | 3 | |
| Knöfler, Fritz | Fritz Knöfler | Actor | 1905 - 1911 | 3 | |
| Kornelatou, Georgia | Georgia Kornelatou | Actor | 1980 - 1981 | 3 | |
| Katz, Leon | Leon Katz | Adaptation, Dramaturg, Translator | 1983 | 3 | 1 |
| Keller, Astrid | Astrid Keller | Actor | 1978 - 1998 | 3 | |
| Kolářová, Daniela | Daniela Kolářová | Actor | 2004 - 2013 | 3 | 1 |
| Kabler, Wolf-Dieter | Wolf-Dieter Kabler | Actor | 1991 - 2008 | 3 | |
| Kechagias, Angelos | Angelos Kechagias | Actor | 2009 - 2010 | 3 | |
| Kičiňová, Miriam | Miriam Kičiňová | Dramaturg | 2009 - 2011 | 3 | |
| Kayser, Karl | Karl Kayser | Adaptation, Director | 1964 - 1984 | 3 | |
| Kehrstephan, Evi | Evi Kehrstephan | Actor | 2012 - 2013 | 3 | 4 |
| Körber, Claudius | Claudius Körber | Actor | 2011 - 2023 | 3 | |
| Kaume, Niklas | Niklas Kaume | Actor | 2013 | 3 | |
| Kreckel, Paul | Paul Kreckel | Actor | 2013 | 3 | |
| Kenward, Laura | Laura Kenward | Actor | 2013 - 2014 | 3 | |
| Kerč, Boris | Boris Kerč | Actor | 1986 - 2002 | 3 | |
| Kirmse, Annette | Annette Kirmse | Actor | 1985 | 3 | |
| Koch, Franziska | Franziska Koch | Actor | 1906 - 1907 | 3 | |
| Karm, Benny | Benny Karm | Designer | 1986 - 1987 | 3 | |
| Karm, Ingela | Ingela Karm | Designer | 1986 - 1987 | 3 | |
| Körner, Roland | Roland Körner | Actor, Adaptation, Designer | 1987 | 3 | |
| Kavanagh, John | John Kavanagh | Actor | 1984 - 2011 | 3 | 1 |
| Kattimani, Hulugappa | Hulugappa Kattimani | Actor | 1995 | 3 | |
| Kusnoor, Santhosh Kumar | Santhosh Kumar Kusnoor | Actor | 1995 | 3 | |
| Kilian, Sven | Sven Kilian | Actor | 1984 | 3 | |
| Krishnaprasad, K. P. | K. P. Krishnaprasad | Actor | 1995 | 3 | |
| Kallaanvaara, Michael | Michael Kallaanvaara | Actor | 1989 - 1998 | 3 | |
| Kleiven, Kari, Ulfsnes | Kari Ulfsnes Kleiven | Actor | 2014 | 3 | 1 |
| Kouwenberg, Jasper, Klein | Jasper Klein Kouwenberg | Actor | 1991 | 3 | |
| Krogh, Guy | Guy Krogh | Designer | 1956 - 1988 | 3 | |
| Krogh, Line | Line Krogh | Director | 1977 - 1988 | 3 | |
| Krystoph, Volker | Volker Krystoph | Actor | 1958 - 1988 | 3 | |
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