| Kouwenberg, Jasper, Klein | Jasper Klein Kouwenberg | Actor | 1991 | 3 | |
| Kraft, Karin | Karin Kraft | Actor | 1991 | 1 | |
| Kerssenbrock, Verena, von | Verena von Kerssenbrock | Designer | 1991 | 3 | |
| Konstantakopoulos, Ilias | Ilias Konstantakopoulos | Lighting Designer | 1991 | 1 | |
| Kelly, Joe | Joe Kelly | Actor | 1991 | 1 | |
| Kátay, Endre | Endre Kátay | Actor | 1991 | 1 | |
| Kent, David G. | David G. Kent | Director | 1991 | 1 | |
| Kleij, Lis, van der | Lis van der Kleij | Choreographer | 1991 | 1 | |
| Kuiper, Marcella | Marcella Kuiper | Actor | 1991 | 1 | |
| Kempen, Rhea, van | Rhea van Kempen | Actor | 1991 | 1 | |
| Koelemeijer, Judith | Judith Koelemeijer | Actor | 1991 | 1 | |
| Klánová, Eva | Eva Klánová | Actor | 1991 | 2 | |
| Kniesbeck, Matthias | Matthias Kniesbeck | Actor | 1991 | 1 | |
| Kammerer, Georg | Georg Kammerer | Designer | 1991 | 1 | |
| Karadimas, Taki | Taki Karadimas | Actor | 1991 | 1 | |
| Kock, Daniela | Daniela Kock | Actor, Costume Designer | 1991 | 4 | |
| Kunze, Susanne | Susanne Kunze | Actor | 1991 | 1 | |
| Kellner, Helmut | Helmut Kellner | Actor | 1991 | 3 | |
| Kelleher, Graham | Graham Kelleher | Actor | 1991 | 1 | |
| Kruczyński, Andrzej | Andrzej Kruczyński | Actor | 1991 | 1 | |
| Kosiniak, Jakub | Jakub Kosiniak | Actor | 1991 | 1 | |
| Knapp, Ralf | Ralf Knapp | Director | 1991 | 1 | |
| Kublinskis, Mihails | Mihails Kublinskis | Director | 1991 | 1 | |
| Kugrēna, Lāsma | Lāsma Kugrēna | Actor | 1991 | 1 | 1 |
| Kirsone, Inese | Inese Kirsone | Actor | 1991 | 1 | 1 |
| Kubilis, Jānis | Jānis Kubilis | Actor | 1991 | 1 | |
| Kemp, Polly | Polly Kemp | Actor | 1991 | 1 | |
| Kampschulte, Peter | Peter Kampschulte | Actor | 1991 | 7 | |
| Kühn, Carsten | Carsten Kühn | Actor | 1991 | 1 | |
| Keyworth, Ben | Ben Keyworth | Actor | 1991 | 1 | |
| Konstantinov, Ljupče | Ljupče Konstantinov | Composer | 1991 | 1 | |
| Kranjc, Mojca | Mojca Kranjc | Dramaturg | 1991 | 1 | |
| Kalatzopoulos, Giannis | Giannis Kalatzopoulos | Actor, Adaptation, Director, Translator | 1991 | 5 | |
| Kaïlas, Vasilis | Vasilis Kaïlas | Actor | 1991 | 1 | |
| Koulourioti, Eleni | Eleni Koulourioti | Actor | 1991 | 4 | |
| Koizumi, Kuniko | Kuniko Koizumi | Actor | 1991 | 1 | |
| Kirishima, Toru | Toru Kirishima | Actor | 1991 | 1 | |
| Kyrtzaki, Maria | Maria Kyrtzaki | Translator | 1991 | 1 | |
| Khan, Irfan | Irfan Khan | Actor | 1991 | 1 | |
| Karasek, Daniel | Daniel Karasek | Adaptation, Director, Producer, Translator | 1990 - 2019 | 63 | 1 |
| Kammer, Nancy-Elizabeth | Nancy-Elizabeth Kammer | Actor | 1990 - 2019 | 2 | 1 |
| Kerckhoffs, Han | Han Kerckhoffs | Actor | 1990 - 2013 | 30 | |
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