| Kleinheinz, Alfred | Alfred Kleinheinz | Actor | 1993 - 1995 | 11 | |
| Klaffke, Jakob, Johannes | Jakob Johannes Klaffke | Actor | 1993 | 1 | |
| Klaric, Michael | Michael Klaric | Actor | 1993 | 1 | |
| Kho Sien Kie, Peter | Peter Kho Sien Kie | Choreographer | 1993 | 1 | |
| Kováts, Adél | Adél Kováts | Actor | 1993 - 2008 | 3 | |
| Kalatzopoulos, Giannis | Giannis Kalatzopoulos | Actor, Adaptation, Director, Translator | 1991 | 5 | |
| Korun, Mile | Mile Korun | Director | 1993 | 1 | |
| Kaïlas, Vasilis | Vasilis Kaïlas | Actor | 1991 | 1 | |
| Koulourioti, Eleni | Eleni Koulourioti | Actor | 1991 | 4 | |
| Kinsella, John | John Kinsella | Actor | 1993 | 1 | |
| Köster, Gundula | Gundula Köster | Actor | 1993 | 1 | |
| Katzer, Dorothea | Dorothea Katzer | Costume Designer | 1993 - 2005 | 3 | |
| Kolaczek, Nina | Nina Kolaczek | Actor | 1993 | 1 | |
| Koizumi, Kuniko | Kuniko Koizumi | Actor | 1991 | 1 | |
| Kirishima, Toru | Toru Kirishima | Actor | 1991 | 1 | |
| Kwakkelstein, Willem | Willem Kwakkelstein | Actor | 1993 - 2004 | 3 | |
| Kindermans, Arjan | Arjan Kindermans | Actor | 1993 | 1 | |
| Kallivokas, Dimitris | Dimitris Kallivokas | Actor | 1993 - 1994 | 2 | |
| Krauel, Martina | Martina Krauel | Actor | 1993 | 2 | |
| Kraemer, Helmut | Helmut Kraemer | Actor | 1960 - 1993 | 5 | |
| Kunkel, Gertrud | Gertrud Kunkel | Actor | 1993 | 1 | |
| Kovacs, Lajos | Lajos Kovacs | Actor, Choreographer | 1965 - 1993 | 2 | |
| Kutschera, Ulrike | Ulrike Kutschera | Actor | 1993 | 1 | |
| Kallin, Anna Kristina | Anna Kristina Kallin | Actor | 1993 | 3 | |
| Koch, Anders, Gjellerup | Anders Gjellerup Koch | Actor | 1993 | 6 | |
| Kooij, Paul, R. | Paul R. Kooij | Actor | 1991 - 1992 | 14 | |
| Korper, Debbie | Debbie Korper | Actor | 1991 - 2012 | 117 | |
| Korf, Geoff | Geoff Korf | Lighting Designer | 1993 - 2008 | 4 | |
| Kypourgos, Nikos | Nikos Kypourgos | Composer | 1991 - 1994 | 2 | |
| Kyrtzaki, Maria | Maria Kyrtzaki | Translator | 1991 | 1 | |
| Karaïndrou, Eleni | Eleni Karaïndrou | Composer | 1991 - 2004 | 2 | |
| Köles, Ferenc | Ferenc Köles | Actor | 2008 | 1 | |
| Kerékgyártó, Olga | Olga Kerékgyártó | Actor | 1930 | 1 | |
| Kolb, Jürgen | Jürgen Kolb | Lighting Designer | 2012 | 1 | |
| Kürstner, Thomas | Thomas Kürstner | Composer, Musical Director | 2002 - 2012 | 2 | |
| Kézdy, György | György Kézdy | Actor | 1965 - 1999 | 6 | |
| Kovács , András, Éry | András Éry Kovács | Adaptation, Designer, Director | 2006 | 3 | |
| Kováts, Ilonka | Ilonka Kováts | Actor | 1906 | 1 | |
| Kárpáthy, Sándor | Sándor Kárpáthy | Actor | 1908 | 1 | |
| Koehler, Scott | Scott Koehler | Actor, Musician | 2012 - 2018 | 80 | |
| Kothari, Pratik | Pratik Kothari | Actor | 2014 | 1 | |
| Kanetkar, Darshan | Darshan Kanetkar | Actor | 2014 | 1 | |
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