| Kinzinger, Irene | Irene Kinzinger | Actor | 1953 | 3 | |
| Kilpeläinen, Hillevi | Hillevi Kilpeläinen | Actor | 1998 | 3 | |
| Koch, Sophie | Sophie Koch | Actor | 1998 - 2000 | 3 | |
| Küngas, Aksel | Aksel Küngas | Actor | 1962 | 3 | |
| Kalmet, Hanno | Hanno Kalmet | Actor | 1962 | 3 | |
| Kuramoto, Yasufumi | Yasufumi Kuramoto | Actor | 1998 - 1999 | 3 | |
| Kentish, Agatha | Agatha Kentish | Actor | 1931 | 3 | |
| Kaila, Essi | Essi Kaila | Actor | 1998 | 3 | |
| Kramer, Karsten | Karsten Kramer | Actor | 1999 | 3 | |
| Koht, Fritzie | Fritzie Koht | Actor | 1936 - 1939 | 3 | |
| Klöhn, André | André Klöhn | Actor | 1999 | 3 | |
| Kampanis, Fanis | Fanis Kampanis | Actor | 1938 - 1939 | 3 | |
| Kildahl, Erling, E. | Erling E. Kildahl | Director | 1946 - 1948 | 3 | |
| Kilbride, Richard | Richard Kilbride | Actor | 1947 - 1949 | 3 | |
| Kijowski, Kazimierz | Kazimierz Kijowski | Actor | 1923 | 3 | |
| Kofoed, Annika | Annika Kofoed | Actor | 2000 | 3 | |
| Kokkin, Janne | Janne Kokkin | Actor | 2013 - 2017 | 3 | |
| Kuş, Gamze | Gamze Kuş (Gamze Kus) | Costume Designer, Designer | 2012 - 2018 | 3 | |
| Kovjanić, Dubravka | Dubravka Kovjanić | Actor | 2000 | 3 | |
| Kull, Elle | Elle Kull | Actor | 1978 | 3 | |
| Knutzen, Rolf | Rolf Knutzen | Actor | 1899 - 1900 | 3 | |
| Konstantinou, Ilektra | Ilektra Konstantinou | Actor | 1993 | 3 | |
| Kneidinger, Karl | Karl Kneidinger | Actor | 1903 - 1917 | 3 | |
| Kummer, Hansruedi | Hansruedi Kummer | Actor | 1993 | 3 | |
| Kottow, Hans | Hans Kottow | Actor, Director | 1906 - 1908 | 3 | |
| Kirkwood, Lucy | Lucy Kirkwood | Adaptation | 2018 - 2019 | 3 | |
| Konfár, Erik | Erik Konfár | Actor | 2017 | 3 | |
| Kopittke, Sigrid | Sigrid Kopittke | Assistant Director, Costume Designer, Designer | 2018 | 3 | |
| Kvartalova, N. | N. Kvartalova | Actor | 1907 - 1910 | 3 | |
| Kirsten, Stefanie | Stefanie Kirsten | Actor | 1990 - 2008 | 2 | |
| Kjærulff-Schmidt, Palle, | Palle Kjærulff-Schmidt | Director | 1974 - 2000 | 2 | |
| Krogh, Malene, | Malene Krogh | Actor | 1974 - 2000 | 2 | |
| Kępińska, Elżbieta | Elżbieta Kępińska | Actor | 1962 - 1975 | 2 | |
| Kellner, Berthold | Berthold Kellner | Actor, Director | 1997 - 2001 | 2 | |
| Kucharesin, Valerj, | Valerj Kucharesin | Actor | 2003 - 2006 | 2 | |
| Kovanko, Lilga | Lilga Kovanko | Actor | 1977 - 1978 | 2 | |
| Kern, András | András Kern | Actor | 1989 | 2 | |
| Kiss, Jenő | Jenő Kiss | Actor | 1989 | 2 | |
| Kuhnhold, Sabrina | Sabrina Kuhnhold | Actor | 1999 - 2000 | 2 | |
| Kemp-Welch, Joan | Joan Kemp-Welch | Actor, Director | 1939 - 1970 | 2 | |
| Kahl, Gisela | Gisela Kahl | Dramaturg | 1990 - 1992 | 2 | |
| Kaitue, Katariina | Katariina Kaitue | Actor | 2002 - 2007 | 2 | |
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