| Karge, Jessica | Jessica Karge | Costume Designer | 1994 - 2018 | 3 | |
| Kangur, Guido | Guido Kangur | Actor | 1997 - 2022 | 3 | |
| Kämpfer, Christian | Christian Kämpfer | Actor | 1997 - 2017 | 3 | |
| König, Klaus-Dieter | Klaus-Dieter König | Actor | 1980 - 2002 | 3 | |
| Kissel, Hiltrud | Hiltrud Kissel | Director, Dramaturg | 1995 - 1996 | 3 | |
| Krawczyk, Jan | Jan Krawczyk | Actor | 1996 - 2006 | 3 | 1 |
| Kőmíves, Mihály | Mihály Kőmíves | Actor | 1965 - 1996 | 3 | |
| Kendall, Merelina | Merelina Kendall | Actor | 1996 | 3 | |
| Krantz, Thomas | Thomas Krantz | Actor, Musician | 1997 | 3 | |
| Kuhl, Jochen | Jochen Kuhl | Actor | 1971 - 2011 | 3 | |
| Kilty, Jerome | Jerome Kilty | Actor | 1949 - 1996 | 3 | |
| Kargerová, Veronika | Veronika Kargerová | Actor | 1996 - 2002 | 3 | |
| Kramer, Uwe | Uwe Kramer | Actor | 1995 | 3 | |
| Klusák, Jan | Jan Klusák | Composer | 1996 - 2002 | 3 | |
| Kaleta, Zbigniew, W. | Zbigniew W. Kaleta | Actor | 1996 | 3 | |
| Karbasnikoff, Sarah | Sarah Karbasnikoff | Actor | 1996 - 1997 | 3 | |
| Krieg-Helbig, Michael | Michael Krieg-Helbig | Actor | 1995 - 2009 | 3 | |
| Krestan, Gabriela | Gabriela Krestan | Actor | 1995 - 2005 | 3 | |
| Kübler, Samuel, Lukas | Samuel Lukas Kübler | Actor | 2002 | 3 | 1 |
| Kemter, Esther | Esther Kemter | Costume Designer | 2006 | 3 | |
| King, Floyd | Floyd King | Actor | 1998 | 3 | |
| Krausen, Park | Park Krausen | Actor | 1998 - 1999 | 3 | |
| Kahl, Franka, Anne | Franka Anne Kahl | Actor | 2002 - 2013 | 3 | |
| King, Kathy | Kathy King | Actor | 1969 - 1970 | 3 | |
| König, Michael | Michael König | Actor | 1968 - 1973 | 3 | 1 |
| Kunze, Hannelore | Hannelore Kunze | Actor | 1968 | 3 | |
| Kronlachner, Hubert | Hubert Kronlachner | Actor | 1962 - 1968 | 3 | |
| Kružíková, Helena | Helena Kružíková | Actor | 1960 - 2012 | 3 | |
| Karhi, Maija | Maija Karhi | Actor | 1953 - 1967 | 3 | |
| Kapor, Ljubomir | Ljubomir Kapor | Actor | 1967 - 2006 | 3 | |
| Kunčević, Ivica | Ivica Kunčević | Actor, Director | 1967 - 2007 | 3 | |
| Kruse, Heiner | Heiner Kruse | Actor | 1967 - 1971 | 3 | |
| Kollasch, Franz | Franz Kollasch | Actor | 1967 | 3 | |
| Kalske, Kullervo | Kullervo Kalske | Actor | 1966 - 1967 | 3 | |
| Key, Alison | Alison Key | Actor | 1967 | 3 | |
| Kovács, Martina | Martina Kovács | Actor | 2001 - 2002 | 3 | |
| Kovács, Edit | Edit Kovács | Actor | 1999 - 2007 | 3 | 1 |
| Kramer, Joel | Joel Kramer | Actor | 1965 - 1966 | 3 | |
| Kaloumenou, Ioanna | Ioanna Kaloumenou | Actor | 1966 - 1985 | 3 | |
| Kostka, Jiří | Jiří Kostka | Actor | 1942 - 1966 | 3 | |
| Král, Jaroslav | Jaroslav Král | Adaptation, Dramaturg | 1965 - 1993 | 3 | |
| Kóti, Árpád | Árpád Kóti | Actor | 1965 | 3 | |
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