| Kemper, Nina | Nina Kemper | Costume Designer | 1956 - 1973 | 2 | |
| Klose, Marte | Marte Klose | Actor | 1956 | 1 | |
| Kuttin, Aloyis | Aloyis Kuttin | Actor | 1956 | 1 | |
| Kraus, Liam | Liam Kraus | Actor | 2008 | 1 | |
| Kvalheim, Lars | Lars Kvalheim | Actor | 2008 | 1 | |
| Klever, Heinz | Heinz Klever | Actor | 1993 | 2 | |
| Knebel, Hans Dieter | Hans Dieter Knebel | Actor | 1994 - 2017 | 5 | |
| Klein, Hans Joachim | Hans Joachim Klein | Actor, Director | 1961 - 2003 | 4 | |
| Kretzer, Fritz | Fritz Kretzer | Actor | 1961 | 1 | |
| Kaulbach, Margret | Margret Kaulbach | Costume Designer | 1954 - 1963 | 3 | |
| Konstantinakou, Katerina | Katerina Konstantinakou | Dramaturg | 2008 - 2012 | 2 | |
| Konstantinakou, Panagiota | Panagiota Konstantinakou | Dramaturg | 2008 | 1 | |
| Kaloumenos, Periklis | Periklis Kaloumenos | Actor | 2008 | 1 | |
| Kuzuoka, Yui | Yui Kuzuoka | Actor | 2008 | 2 | |
| Krutzler, Christoph, F. | Christoph F. Krutzler | Actor | 2008 | 2 | |
| Kaminsky, Esther Rachel | Esther Rachel Kaminsky | Actor | 1910 | 4 | |
| Kaminsky, Abraham Isaac | Abraham Isaac Kaminsky | Actor | 1910 | 2 | |
| Kirchstein, Rüdiger | Rüdiger Kirchstein | Actor | 1971 - 1973 | 10 | |
| Kuhlmann, Klaus-Harald | Klaus-Harald Kuhlmann | Actor | 1971 - 1973 | 4 | |
| Koppler, Dieter | Dieter Koppler | Actor | 1986 | 2 | |
| Kolarovićka, - | - Kolarovićka | Actor | 1878 | 1 | |
| Kolarovićeva, Z. | Z. Kolarovićeva | Actor | 1878 | 1 | |
| Kettler, Nadine | Nadine Kettler | Actor | 2009 - 2013 | 2 | |
| Kämmer, Stephanie | Stephanie Kämmer | Actor | 2009 | 1 | |
| Kühn, Vincent | Vincent Kühn | Actor | 2009 - 2010 | 3 | |
| König, Ulrich | Ulrich König | Composer | 2009 - 2010 | 3 | |
| Klemt, Katja | Katja Klemt | Actor | 2009 - 2010 | 9 | |
| Kozeluh, Courtney Lynn | Courtney Lynn Kozeluh | Actor | 2009 | 1 | |
| Knouse, Rachel | Rachel Knouse | Actor | 2009 | 1 | |
| Kundt-Petters, Karin | Karin Kundt-Petters | Actor | 2009 | 1 | |
| Kröger, Olav | Olav Kröger | Composer | 2009 | 1 | |
| Kobayashi, Motoka | Motoka Kobayashi | Actor | 2009 | 1 | |
| Koepp, Juliane | Juliane Koepp | Dramaturg | 2008 - 2015 | 2 | |
| Kelley, Kristen Tripp | Kristen Tripp Kelley | Actor | 2009 | 1 | |
| Kunkel, Holger | Holger Kunkel | Actor | 2009 | 2 | |
| Kalvaitytė, Jurga | Jurga Kalvaitytė | Actor | 2009 - 2011 | 4 | |
| Kielaitė, Donata | Donata Kielaitė | Actor | 2009 - 2010 | 3 | |
| Klott, Julius | Julius Klott | Actor | 1901 | 1 | |
| Kießling, Sina | Sina Kießling | Actor | 2008 - 2017 | 7 | |
| Kesterson, Colleen | Colleen Kesterson | Costume Designer | 2009 | 1 | |
| Knox, Ryan Parker | Ryan Parker Knox | Actor | 2009 | 1 | |
| Kirsten, Johannes | Johannes Kirsten | Dramaturg | 2009 - 2010 | 4 | |
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