| Kollarik, Ágnes | Ágnes Kollarik | Actor | 2002 | 1 | |
| Kroh, Andrea | Andrea Kroh | Actor | 2002 | 1 | |
| Kouloumbi, Christina | Christina Kouloumbi | Actor | 2002 | 3 | |
| Koutsoukou, Mairi | Mairi Koutsoukou | Actor | 2002 | 3 | |
| Kanagiou, Lambrini | Lambrini Kanagiou | Actor | 2002 | 3 | |
| Kotsarinis, Giannis | Giannis Kotsarinis | Actor | 2002 | 4 | |
| Kranas, Giannis | Giannis Kranas | Actor | 2002 - 2008 | 5 | |
| Karampetsis, Dimitris | Dimitris Karampetsis | Actor | 2002 - 2012 | 2 | |
| Kotepanos, Thodoros | Thodoros Kotepanos | Composer | 2002 | 1 | |
| Kyriakaki-Loukissa, Olympia | Olympia Kyriakaki-Loukissa | Musical Director | 1978 - 2002 | 2 | |
| Keen, Marie | Marie Keen | Costume Designer | 2002 | 1 | |
| Kelly, Gina | Gina Kelly | Actor | 2002 | 1 | |
| Koek, Bo | Bo Koek | Sound Designer | 2002 | 1 | |
| Keating, Thomas | Thomas Keating | Actor | 2002 | 6 | |
| Kim, Ji-Young | Ji-Young Kim | Actor | 2002 | 12 | |
| Kendrick Smith, Lucy | Lucy Kendrick Smith | Actor | 2002 | 7 | |
| Kalas, Janet | Janet Kalas | Sound Designer | 2002 | 1 | |
| Kahre, Andreas | Andreas Kahre | Designer | 2002 | 1 | |
| Kirkpatrick, Helen | Helen Kirkpatrick | Actor | 2002 | 1 | |
| Kačalina, Elena | Elena Kačalina | Actor | 2002 - 2004 | 2 | |
| Koležnik, Mateja | Mateja Koležnik | Director | 2002 - 2022 | 9 | |
| Koležnik, Andrej | Andrej Koležnik | Lighting Designer | 2002 | 1 | |
| Kalan, Sašo | Sašo Kalan | Sound Designer | 2000 - 2002 | 2 | |
| Kin, Rami | Rami Kin | Actor | 1997 | 1 | |
| Kikuchi, Takahiro | Takahiro Kikuchi | Actor | 1997 | 1 | |
| Kohler, Miriam | Miriam Kohler | Actor | 1997 | 1 | |
| Kozłowski, Piotr | Piotr Kozłowski | Actor | 1997 | 1 | |
| Kirin, Mr. | Mr. Kirin | Actor | 1888 - 1898 | 3 | |
| Kokotović, Nikola | Nikola Kokotović | Translator | 1888 - 1952 | 6 | |
| Kubran, Martin | Martin Kubran | Dramaturg | 2013 - 2021 | 3 | |
| Kőrösi, István | István Kőrösi | Actor | 2013 | 1 | |
| Krizsán, Szilvia | Szilvia Krizsán | Actor | 2013 | 1 | |
| Kristoffersen, Svenn Erik | Svenn Erik Kristoffersen | Musician | 1989 | 1 | |
| Kayser, Dolly | Dolly Kayser | Actor | 1989 | 1 | |
| Komárková, Adéla | Adéla Komárková | Actor | 2002 | 1 | |
| Koula, Kamil | Kamil Koula | Actor | 2002 | 2 | |
| Kunc, Marek | Marek Kunc | Actor | 2002 | 3 | |
| Klemens, Václav | Václav Klemens | Adaptation, Director | 2002 | 2 | |
| Král, Darek | Darek Král | Composer | 2002 | 1 | |
| Koltay, Gyula | Gyula Koltay | Actor | 1929 - 1934 | 4 | |
| Kušar, Jerneja | Jerneja Kušar | Actor | 2003 | 1 | |
| Kiss, Ferenc | Ferenc Kiss | Actor | 1931 - 1934 | 8 | |
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