| Kirsten, Stefanie | Stefanie Kirsten | Actor | 1990 - 2008 | 2 | |
| Kvamme, Bodil | Bodil Kvamme | Adaptation, Designer, Dramaturg | 1990 - 2009 | 31 | 1 |
| Kerckhoffs, Han | Han Kerckhoffs | Actor | 1990 - 2013 | 30 | |
| Karasek, Daniel | Daniel Karasek | Adaptation, Director, Producer, Translator | 1990 - 2019 | 63 | 1 |
| Kammer, Nancy-Elizabeth | Nancy-Elizabeth Kammer | Actor | 1990 - 2019 | 2 | 1 |
| Kagimoto, Keiko | Keiko Kagimoto | Actor | 1991 | 1 | |
| Kaizik, Jürgen | Jürgen Kaizik | Director | 1991 | 1 | |
| Komatsu, Masao | Masao Komatsu | Actor | 1991 | 1 | |
| Kuhlmann, Harald | Harald Kuhlmann | Actor | 1991 | 1 | 1 |
| Kinzler, Johannes | Johannes Kinzler | Actor | 1991 | 1 | |
| Kruttke, Daniel | Daniel Kruttke | Actor | 1991 | 1 | |
| Kruttke, Katharina | Katharina Kruttke | Actor | 1991 | 1 | |
| Klein, Lohne | Lohne Klein | Actor | 1991 | 1 | |
| Karlsen, Jens Petter | Jens Petter Karlsen | Actor | 1991 | 1 | |
| Kruse, Bjørn H. | Bjørn H. Kruse | Composer | 1991 | 38 | |
| Kwetzinsky, Joachim Kjelsaas | Joachim Kjelsaas Kwetzinsky | Actor | 1991 | 12 | |
| Kalanovski, Vesselin | Vesselin Kalanovski | Actor | 1991 | 1 | |
| Klugt, Niko van der | Niko van der Klugt | Designer, Lighting Designer | 1991 | 2 | |
| Kimman, Mirjam | Mirjam Kimman | Musician | 1991 | 1 | |
| Klugt, Nathalie, van der | Nathalie van der Klugt | Actor | 1991 | 2 | |
| 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 | |
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