| Kakari, Shuhei | Shuhei Kakari | Sound Designer | 1999 | 1 | |
| Karpekina, Tatjana | Tatjana Karpekina | Actor | 1999 | 1 | |
| Kokurina, Larisa | Larisa Kokurina | Actor | 1999 | 1 | |
| Kazakov, Sergej | Sergej Kazakov | Actor | 1999 | 1 | |
| Kopyto, Erica | Erica Kopyto | Actor | 1999 | 2 | |
| Kokotailo, Lori | Lori Kokotailo | Actor | 1999 | 1 | |
| Knezevich, Steven | Steven Knezevich | Musician | 1999 | 1 | |
| Kiss, László Felhőfi | László Felhőfi Kiss | Designer, Director | 1999 | 2 | |
| Keil, - | - Keil | Actor | 1999 | 1 | |
| Kuhnhold, Sabrina | Sabrina Kuhnhold | Actor | 1999 – 2000 | 2 | |
| Kromvoll, Espen, | Espen Kromvoll | Actor | 1999 – 2000 | 4 | |
| Kolding, Mette | Mette Kolding | Actor | 1999 – 2000 | 3 | |
| Klooren, Marko | Marko Klooren | Actor | 1999 – 2000 | 1 | |
| Kappes, Simon | Simon Kappes | Actor | 1999 – 2000 | 1 | |
| Katt, Carmen | Carmen Katt | Actor | 1999 – 2000 | 1 | |
| Kitzing, Tina | Tina Kitzing | Costume Designer, Designer | 1999 – 2000 | 2 | |
| Krämer, Susanne | Susanne Krämer | Actor | 1999 – 2000 | 2 | |
| Kraus, Marion | Marion Kraus | Actor | 1999 – 2000 | 4 | |
| Kunze, Ulrike | Ulrike Kunze | Costume Designer, Designer | 1999 – 2000 | 2 | |
| Kristen, Siegfried | Siegfried Kristen | Actor | 1999 – 2000 | 1 | |
| Kindinov, Evgeny | Evgeny Kindinov | Actor | 1999 – 2001 | 1 | |
| Kornmüller, Jacqueline | Jacqueline Kornmüller | Director | 1999 – 2006 | 3 | |
| Kaminsky, Andrej | Andrej Kaminsky | Actor | 1999 – 2007 | 3 | |
| Kovács, Edit | Edit Kovács | Actor | 1999 – 2007 | 3 | |
| Kokko-Saukkonen, Leena, | Leena Kokko-Saukkonen | Actor | 1999 – 2008 | 8 | 1 |
| Komulainen, Eeva-Kirsti, | Eeva-Kirsti Komulainen | Actor | 1999 – 2008 | 4 | |
| Klem, Jiří | Jiří Klem | Actor | 1999 – 2009 | 4 | |
| Klaers, Michael | Michael Klaers | Lighting Designer | 1999 – 2010 | 2 | |
| Kark, Tõnu | Tõnu Kark | Actor | 1999 – 2010 | 2 | |
| Krautz, Steffi | Steffi Krautz | Actor | 1999 – 2011 | 4 | |
| Krischke, Stefan | Stefan Krischke | Actor | 1999 – 2011 | 14 | |
| Kuhl, Annika | Annika Kuhl | Actor | 1999 – 2012 | 4 | |
| Kreß, Janine | Janine Kreß | Actor | 1999 – 2013 | 12 | 3 |
| Koroly, Charles, | Charles Koroly | Costume Designer, Designer, Sound Designer | 1999 – 2014 | 8 | |
| Kimoulis, Giorgos | Giorgos Kimoulis | Actor, Translator | 1999 – 2014 | 4 | |
| Kaderk, Manfred | Manfred Kaderk | Designer | 1999 – 2017 | 7 | |
| Kelly, Samuel | Samuel Kelly | Actor | 2000 | 1 | |
| Kerrick, Benjamin | Benjamin Kerrick | Actor | 2000 | 1 | |
| Kerwin, Shawn, | Shawn Kerwin | Costume Designer | 2000 | 1 | |
| Khalaf, Raed | Raed Khalaf | Composer | 2000 | 1 | |
| Kizaur, Matthew | Matthew Kizaur | Actor | 2000 | 1 | |
| Krimolowski, Shachar, | Shachar Krimolowski | Actor | 2000 | 1 | |
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