| Kovács, András, Éry | András Éry Kovács | Adaptation, Designer, Director | 2006 | 3 | |
| Knabl, Nikolaus | Nikolaus Knabl | Sound Designer | 2014 - 2016 | 3 | |
| Kelly, Daren | Daren Kelly | Actor | 1994 - 2001 | 3 | 1 |
| Kilburger, Hans Joachim | Hans Joachim Kilburger | Actor | 1976 - 1982 | 3 | |
| Kühnen, Maria | Maria Kühnen | Actor | 1971 - 1982 | 3 | |
| Karazisis, Akylas | Akylas Karazisis | Actor | 1994 - 2015 | 3 | |
| Kouki, Tapio | Tapio Kouki | Actor | 1967 - 1994 | 3 | |
| Kaethner, Sigrun | Sigrun Kaethner | Actor | 1982 - 1998 | 3 | |
| Konstantinov, Irinej | Irinej Konstantinov (Ириней Константинов) | Actor | 1982 - 2023 | 3 | |
| Kratz, Steve | Steve Kratz | Actor | 1994 - 2007 | 3 | 1 |
| Kaňkovský, Václav | Václav Kaňkovský | Actor | 1979 - 2000 | 3 | |
| Kairisa, Astrida | Astrida Kairisa | Actor | 1994 - 2010 | 3 | |
| Kuisma, Katariina | Katariina Kuisma | Actor, Dancer | 1994 | 3 | |
| 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 | |
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