| Kesten, Peter | Peter Kesten | Director | 2008 - 2009 | 7 | |
| Kapelonis, Kostis | Kostis Kapelonis | Director | 2002 - 2010 | 7 | 1 |
| Konakchiiska, Veselina | Veselina Konakchiiska | Actor | 2010 - 2012 | 7 | 6 |
| Karow, Reinhard | Reinhard Karow | Actor | 1985 - 2002 | 7 | |
| Kristensen, Jeppe | Jeppe Kristensen | Director | 2014 - 2016 | 7 | 1 |
| Krug, Ines | Ines Krug | Actor | 1991 - 2006 | 7 | |
| Kuhn, Hans Peter | Hans Peter Kuhn | Composer, Sound Designer | 1991 - 1993 | 7 | |
| Kern, Georges | Georges Kern | Actor | 1988 | 7 | |
| Kinge, Hans Jakob | Hans Jakob Kinge | Actor | 1953 - 2006 | 7 | 1 |
| Kouwenhoven, Annet | Annet Kouwenhoven | Actor | 1988 - 2000 | 7 | |
| Kerpel, Roger Van | Roger Van Kerpel | Actor | 1992 - 2001 | 7 | |
| Korte, Hans | Hans Korte | Actor, Director | 1960 - 1988 | 7 | |
| Kampschulte, Peter | Peter Kampschulte | Actor | 1991 | 7 | |
| Kézdy, György | György Kézdy | Actor | 1965 - 1999 | 7 | 1 |
| Komárek, Tomáš | Tomáš Komárek | Actor | 1993 - 1997 | 7 | |
| Krumbein, Kathrin | Kathrin Krumbein | Actor, Costume Designer, Designer | 1994 - 2006 | 7 | |
| Kinzel, Erwin | Erwin Kinzel | Actor | 1996 | 7 | |
| Kaupert, Cornelia | Cornelia Kaupert | Actor | 1995 | 7 | |
| Kastler, Heide | Heide Kastler | Costume Designer | 2003 - 2014 | 7 | 1 |
| Kirchner, Alfred | Alfred Kirchner | Designer, Director | 1977 - 2013 | 7 | 1 |
| Kovács, Károly | Károly Kovács | Actor | 1924 - 1964 | 7 | |
| Katseli-Mazaraki, Aleka | Aleka Katseli-Mazaraki | Actor | 1943 - 1985 | 7 | |
| Kaderk, Manfred | Manfred Kaderk | Designer | 1999 - 2018 | 7 | |
| Kendrick Smith, Lucy | Lucy Kendrick Smith | Actor | 2002 | 7 | |
| Kézdi, Imola | Imola Kézdi | Actor | 2012 - 2017 | 7 | 1 |
| Kandel, Paul | Paul Kandel | Actor | 1989 | 7 | |
| Kirby, Barbara | Barbara Kirby | Actor | 2003 | 7 | |
| Kraft, Iris | Iris Kraft | Costume Designer, Designer | 2003 - 2009 | 7 | 1 |
| Kiss-Végh, Emőke | Emőke Kiss-Végh | Actor, Adaptation | 2009 - 2016 | 7 | 3 |
| Konvalinová, Irena | Irena Konvalinová | Actor | 2000 - 2011 | 7 | |
| Krupanská, Sylvie | Sylvie Krupanská | Actor | 2009 - 2012 | 7 | |
| Kalužný, Jiří | Jiří Kalužný | Actor | 2000 - 2008 | 7 | |
| Kroupová, Kateřina | Kateřina Kroupová | Actor | 2000 | 7 | |
| Kolář, Ladislav | Ladislav Kolář | Actor, Composer | 1989 - 2000 | 7 | |
| Kahnert, Janning | Janning Kahnert | Actor | 2005 - 2016 | 7 | 1 |
| Kersten, Daniel | Daniel Kersten | Actor | 2007 | 7 | 1 |
| Knox, Alex | Alex Knox | Actor | 2008 | 7 | |
| Klee, Lorenz | Lorenz Klee | Actor | 2008 | 7 | |
| Kießling, Sina | Sina Kießling | Actor | 2008 - 2017 | 7 | |
| Kirsch, Nicola | Nicola Kirsch | Actor | 2015 - 2017 | 7 | |
| Keck, Julian | Julian Keck | Actor | 2011 - 2016 | 7 | |
| Kuhlmann, Otto | Otto Kuhlmann | Actor | 1960 - 1962 | 7 | 1 |
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