| Kuntarič, Ana | Ana Kuntarič | Actor | 2003 | 1 | |
| Konstantinov, Iriney | Iriney Konstantinov | Actor | 2003 | 1 | |
| Kavaldjieva, Nevena | Nevena Kavaldjieva | Costume Designer, Designer | 2003 | 2 | |
| Keith, Crystal | Crystal Keith | Actor | 2003 | 1 | |
| Környey, Paula | Paula Környey | Actor | 1931 | 1 | |
| Kandel, Paul | Paul Kandel | Actor | 1989 | 7 | |
| Koukouras, Vasilis | Vasilis Koukouras | Actor | 1989 | 1 | |
| Kecsek, Karina | Karina Kecsek | Actor | 2001 - 2003 | 9 | |
| Kremer, Ulrike | Ulrike Kremer | Costume Designer | 2001 - 2003 | 9 | |
| Kleiven, Tommy | Tommy Kleiven | Actor | 2015 | 6 | |
| Kolbe, Thomas | Thomas Kolbe | Actor | 2003 - 2005 | 4 | |
| Krietsch-Matzura, Oliver | Oliver Krietsch-Matzura | Actor | 1997 | 4 | |
| Kavardzhikova, Maria | Maria Kavardzhikova | Actor | 1997 - 2006 | 2 | |
| Kostadinov, Georgi | Georgi Kostadinov | Actor | 1997 | 1 | |
| Kaltenhäuser, Sara | Sara Kaltenhäuser | Actor | 2003 | 1 | |
| Keating, Patrick | Patrick Keating | Actor | 2003 | 1 | |
| Kelly, Tony | Tony Kelly | Director | 2003 | 1 | |
| Kennholt, Steffan | Steffan Kennholt | Actor | 2015 | 6 | |
| Krochesky, Adrienne | Adrienne Krochesky | Actor | 2001 | 2 | |
| Kobialka, Fran | Fran Kobialka | Sound Designer | 2001 | 1 | |
| Koppmann, Angelika | Angelika Koppmann | Actor | 2003 | 3 | |
| Kunze, Julia | Julia Kunze | Actor | 2003 | 3 | |
| Keller, Ed | Ed Keller | Actor | 2003 | 1 | |
| Kranz, Fran | Fran Kranz | Actor | 2003 | 1 | |
| Koo, Laura | Laura Koo | Costume Designer | 2003 | 1 | |
| Kirby, Barbara | Barbara Kirby | Actor | 2003 | 7 | |
| Kakkarelidou, Sofia | Sofia Kakkarelidou | Actor | 2001 | 1 | |
| Karaviotis, Dimitris | Dimitris Karaviotis | Actor | 2001 | 1 | |
| Kefalas, Nikos | Nikos Kefalas | Actor | 1993 - 2001 | 4 | |
| Kivirähk, Kairi | Kairi Kivirähk | Actor | 2003 | 1 | |
| Kurs, Mailen | Mailen Kurs | Actor | 2003 | 1 | |
| Kappl, Joachim | Joachim Kappl | Actor | 2001 - 2003 | 40 | |
| Kenessey, Ferenc | Ferenc Kenessey | Actor | 1941 | 1 | |
| Kypraios, Vangelis | Vangelis Kypraios | Actor | 2003 | 1 | |
| Korink, Petra | Petra Korink | Designer | 2003 - 2004 | 3 | |
| Kisteleky, V. | V. Kisteleky | Actor | 1941 | 1 | |
| Kazakas, Kostas | Kostas Kazakas | Actor | 2003 | 1 | |
| Kleitou, Giota | Giota Kleitou | Actor | 2003 | 1 | |
| Kazantzi, Katerina | Katerina Kazantzi | Actor | 2003 | 1 | |
| Kagias, Christos | Christos Kagias | Lighting Designer | 2003 | 1 | |
| Korolic, Dayan | Dayan Korolic | Actor, Composer | 2003 - 2016 | 8 | |
| Karlsen, Cicci, Jøssund | Cicci Jøssund Karlsen | Actor | 2015 | 3 | |
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