| Kesztlerné, Júlia, Kápolnai | Júlia Kápolnai Kesztlerné | Actor | 1909 | 1 | |
| Kemp, Bill | Bill Kemp | Actor | 1996 | 1 | |
| König, Klaus-Dieter | Klaus-Dieter König | Actor | 1980 - 2002 | 3 | |
| Kofmel, Richard | Richard Kofmel | Actor | 1996 | 1 | |
| Kner, Peter | Peter Kner | Actor | 1996 | 1 | |
| Karácsony, Tamás | Tamás Karácsony | Actor | 1996 | 1 | |
| Kovács, Zsuzsanna | Zsuzsanna Kovács | Actor, Director | 1996 - 2019 | 8 | |
| Kelemen, József | József Kelemen | Actor | 1996 | 1 | |
| King, Jacqueline | Jacqueline King | Actor | 1980 | 5 | |
| Kempf, Tobias | Tobias Kempf | Actor | 1996 - 1997 | 8 | |
| Kopetty, Samuel | Samuel Kopetty | Actor | 1996 - 1997 | 8 | |
| Kotková, Eva | Eva Kotková | Costume Designer | 1995 | 1 | |
| Kaczmarek, Jan, A. P. | Jan Andrzej Paweł Kaczmarek | Composer | 1995 | 1 | |
| Kösters, Johannes, M. | Johannes M. Kösters | Actor | 1996 | 1 | |
| Kubelka, Christina | Christina Kubelka | Actor | 1996 | 1 | |
| Kissel, Hiltrud | Hiltrud Kissel | Director, Dramaturg | 1995 - 1996 | 3 | |
| Kliem, Klaus-Peter | Klaus-Peter Kliem | Actor | 1996 | 1 | |
| Keen, Karen | Karen Keen | Designer | 1996 | 1 | |
| Kőmíves, Mihály | Mihály Kőmíves | Actor | 1965 - 1996 | 3 | |
| Kendall, Merelina | Merelina Kendall | Actor | 1996 | 3 | |
| Konrádová, Kamila | Kamila Konrádová | Dramaturg | 1996 - 2012 | 2 | |
| Kwieciński, Michał | Michał Kwieciński | Director | 1997 | 1 | |
| Kujszczuk, Magdalena | Magdalena Kujszczuk | Designer | 1997 | 1 | |
| Krauze, Ewa | Ewa Krauze | Costume Designer | 1997 - 2009 | 2 | |
| Kramer, Dieter | Dieter Kramer | Actor | 1993 - 1996 | 6 | |
| Kramer, Urs | Urs Kramer | Actor | 1996 | 1 | |
| Knuchel, Peter | Peter Knuchel | Designer | 1996 | 1 | |
| Khan, Dipankar | Dipankar Khan | Actor, Director | 1996 - 2007 | 10 | |
| Krantz, Thomas | Thomas Krantz | Actor, Musician | 1997 | 3 | |
| Keho, Pasi | Pasi Keho | Lighting Designer | 1996 | 1 | |
| Konstantopoulos, Konstantinos | Konstantinos Konstantopoulos | Actor | 1995 | 1 | |
| Kakleas, Giannis | Giannis Kakleas | Director | 1995 | 1 | |
| Knikman, Leo | Leo Knikman | Sound Designer | 1996 | 1 | |
| Kuhl, Jochen | Jochen Kuhl | Actor | 1971 - 2011 | 3 | |
| Kojima, Yumiko | Yumiko Kojima | Actor | 1996 - 1997 | 2 | |
| Kiuchi, Naomi | Naomi Kiuchi | Actor | 1996 - 1997 | 2 | |
| Kawahara, Kazu | Kazu Kawahara | Designer | 1996 | 1 | |
| Karasawa, Kazuko | Kazuko Karasawa | Actor | 1996 | 1 | |
| Kitamura, Kiyoharu | Kiyoharu Kitamura | Actor | 1996 | 1 | |
| Kryszczuk, Katarzyna | Katarzyna Kryszczuk | Actor | 1995 | 1 | |
| Kinzel, Erwin | Erwin Kinzel | Actor | 1996 | 7 | |
| Knoll, Eveline | Eveline Knoll | Actor | 1996 | 1 | |
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