| Kružkov, A | A Kružkov | Actor | 1979 | 1 | |
| Kappner, Hr. | Hr. Kappner | Actor | 1878 - 1880 | 2 | |
| Kratze, Hr. | Hr. Kratze | Actor | 1878 | 1 | |
| Kvaša, Igor | Igor Kvaša | Actor | 1979 - 1981 | 2 | |
| Kitaev, M. | M. Kitaev | Designer | 1979 | 1 | |
| Kuntzsch, Joachim | Joachim Kuntzsch | Musician | 1975 - 1990 | 3 | |
| Kirkman, Penny | Penny Kirkman | Actor | 1973 - 1977 | 2 | |
| Kenrick, Margot | Margot Kenrick | Actor | 1977 | 1 | |
| Kvaran, Ævar, R. | Ævar R. Kvaran | Actor | 1943 - 1978 | 6 | |
| Kjær, Diana | Diana Kjær | Actor | 1975 | 1 | |
| Kernell, Linda | Linda Kernell | Actor | 1979 | 1 | |
| Kinding, Thomas | Thomas Kinding | Designer, Translator | 1961 - 1979 | 2 | |
| Kutz, Kazimierz | Kazimierz Kutz | Director | 1979 | 1 | |
| Kołodziej, Marian | Marian Kołodziej | Designer | 1975 - 1979 | 2 | |
| Kochańczyk, Marcel | Marcel Kochańczyk | Designer, Director | 1978 - 1979 | 4 | |
| Kozlik, Al | Al Kozlik | Actor | 1979 | 1 | |
| Kroupa, Susan | Susan Kroupa | Actor | 1979 | 1 | |
| Koutsoudaki, Christina | Christina Koutsoudaki | Actor | 1972 | 1 | |
| Kovatzi-Skaltsa, Rena | Rena Kovatzi-Skaltsa | Musical Director | 1972 | 1 | |
| Kligman, Paul | Paul Kligman | Actor | 1972 | 1 | |
| Köhler, Heinz Dieter | Heinz Dieter Köhler | Adaptation, Director | 1972 | 2 | |
| Kessler, Ruth | Ruth Kessler | Actor | 1972 | 1 | |
| Kist, Uwe | Uwe Kist | Actor | 1972 | 1 | |
| Kist, Jürgen | Jürgen Kist | Actor | 1972 | 1 | |
| Kramer, Katrin | Katrin Kramer | Dramaturg | 2013 - 2014 | 3 | |
| Kołbasiuk, Krzysztof | Krzysztof Kołbasiuk | Actor | 1975 | 1 | |
| Kaczynski, Józef | Józef Kaczynski | Actor | 1975 | 1 | |
| Kustosik, Daniel | Daniel Kustosik | Actor | 1975 | 1 | |
| Klimczak, Ambrozy | Ambrozy Klimczak | Actor | 1975 | 1 | |
| Kryszak, Jerzy | Jerzy Kryszak | Actor | 1975 | 2 | |
| Kapstad, Egil | Egil Kapstad | Composer | 1973 | 1 | |
| Kemmer, Peter Jochen | Peter Jochen Kemmer | Actor | 1973 - 1987 | 4 | |
| Krupianka, Hanna | Hanna Krupianka | Actor | 1973 | 1 | |
| Kostecki, Wojciech | Wojciech Kostecki | Actor | 1973 | 1 | |
| Kent, Trevor | Trevor Kent | Actor | 1979 | 1 | |
| Kraus, Kai | Kai Kraus | Actor | 1973 | 1 | |
| Kolma, Knut | Knut Kolma | Adaptation | 1961 - 1972 | 6 | |
| Karra, Matina | Matina Karra | Actor | 1977 - 1995 | 5 | |
| Knapp, Bill | Bill Knapp | Actor | 1972 | 1 | |
| Kolodziej, Barbara | Barbara Kolodziej | Costume Designer | 1973 - 1994 | 2 | |
| Kalogirou, Spyros | Spyros Kalogirou | Actor | 1961 - 1999 | 16 | |
| Konstantopoulos, Spyros | Spyros Konstantopoulos | Actor | 1956 - 1979 | 2 | |
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