| Klauke, Peer | Peer Klauke | Actor | 1994 | 1 | |
| Knobbe, Ilona | Ilona Knobbe | Actor | 1994 | 1 | |
| Koloc, Rudolf | Rudolf Koloc | Director | 1994 | 1 | |
| Kremen, Lora | Lora Kremen | Actor | 1982 | 1 | |
| Konstantinov, Irinej | Irinej Konstantinov (Ириней Константинов) | Actor | 1982 - 2023 | 3 | |
| Kisselitschka, Renata | Renata Kisselitschka | Actor | 1982 | 1 | |
| Kolarova, Velika | Velika Kolarova | Actor | 1982 | 1 | |
| Keranova, Lora | Lora Keranova | Actor | 1982 | 1 | |
| Krietsch, Hansjoachim | Hansjoachim Krietsch | Actor | 1994 | 1 | |
| Kirtscheva, Vessela | Vessela Kirtscheva | Costume Designer | 1982 | 1 | |
| Kollek, Peter | Peter Kollek | Actor | 1982 | 1 | |
| Koufakis, Nikos | Nikos Koufakis | Actor | 2014 - 2015 | 2 | |
| Kaufmann, Friedrich | Friedrich Kaufmann | Actor | 1982 | 1 | |
| Kobelev, Nikita | Nikita Kobelev (Никита Кобелев) | Director | 2013 | 1 | |
| Künzig, Georg | Georg Künzig | Actor | 1982 | 1 | |
| Kramenko, Mikhail | Mikhail Kramenko (Михаил Краменко) | Designer | 2013 | 1 | |
| Kuryshev, Sergey | Sergey Kuryshev (Сергей Курышев) | Actor | 2013 | 1 | |
| Kozyrev, Sergey | Sergey Kozyrev (Сергей Козырев) | Actor | 2011 - 2013 | 2 | |
| Kleopina, Ekaterina | Ekaterina Kleopina (Екатерина Клеопина) | Actor | 2013 | 1 | |
| Kitamura, Mana | Mana Kitamura | Actor | 1994 | 1 | |
| Kanter, Catherine | Catherine Kanter | Actor | 1994 - 1995 | 6 | |
| Killick, David | David Killick | Actor | 1994 - 1996 | 15 | |
| Kükemezey, Vilma | Vilma Kükemezey | Actor | 1890 | 2 | |
| Kaczér, Nina | Nina Kaczér | Actor | 1890 - 1891 | 4 | |
| Kyd, Susan | Susan Kyd | Actor | 1980 | 1 | |
| Kangas, Kaija | Kaija Kangas | Actor | 1980 | 1 | |
| Kujanpää, Ari | Ari Kujanpää | Actor | 1980 | 1 | |
| Koskinen, Juhani | Juhani Koskinen | Translator | 1980 | 1 | |
| Kanzaki, Ai | Ai Kanzaki | Actor | 1980 | 1 | |
| Kotsovoulou, Alina | Alina Kotsovoulou | Actor | 1994 | 1 | |
| Kourtaki, Dioni | Dioni Kourtaki | Actor | 2014 | 1 | |
| Kaletsanos, Ieronimos | Ieronimos Kaletsanos | Actor | 2014 - 2023 | 6 | |
| Kyrgia, Eri | Eri Kyrgia | Adaptation, Dramaturg, Translator | 2012 - 2023 | 12 | |
| Karch, Matthias | Matthias Karch | Designer | 1994 | 1 | |
| Karger, Reinhard | Reinhard Karger | Musical Director | 1994 | 1 | |
| Koritzinsky, Marianne | Marianne Koritzinsky | Actor | 1980 | 1 | |
| Kittelsen, Guttorm | Guttorm Kittelsen | Musician | 1980 | 1 | |
| Kolar, Helmuth | Helmuth Kolar | Actor | 1971 - 1980 | 2 | |
| Kallio, Pentti | Pentti Kallio | Actor | 1980 | 1 | |
| Kuosmanen, Martti | Martti Kuosmanen | Actor | 1980 | 1 | |
| Konu, Leo | Leo Konu | Actor | 1980 | 1 | |
| Kinnari, Irene | Irene Kinnari | Actor, Costume Designer | 1980 | 2 | |
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