| Kaszás, Gergő | Gergő Kaszás | Actor | 2007 | 1 | |
| Kostopoulos, Nassos | Nassos Kostopoulos | Actor | 2003 | 1 | |
| Kjellberg, Saskia | Saskia Kjellberg | Actor | 2003 | 1 | |
| Kjellberg, Elin | Elin Kjellberg | Actor | 2003 | 1 | |
| Karkkonen, Sara | Sara Karkkonen | Actor | 2003 | 1 | |
| Kyander, Melker | Melker Kyander | Actor | 2003 | 1 | |
| Kefirova, Maria | Maria Kefirova | Actor, Choreographer | 2003 | 2 | |
| Kali, Andrea | Andrea Kali | Actor | 2008 | 3 | |
| Kijek, Stefan | Stefan Kijek | Actor | 2003 | 1 | |
| Kijek, Ben | Ben Kijek | Actor | 2003 | 1 | |
| Kokoris, Stathis | Stathis Kokoris | Actor | 2003 - 2004 | 2 | |
| Konomi, Maria | Maria Konomi | Designer | 2003 - 2004 | 2 | |
| Kerekes, Éva | Éva Kerekes | Actor | 2012 | 1 | |
| Király, Dániel | Dániel Király | Actor | 2012 | 1 | |
| Kulcsár, Viktória | Viktória Kulcsár | Actor | 2012 | 1 | |
| Krstić, Milorad | Milorad Krstić | Designer | 2012 - 2013 | 5 | |
| Kiss, Attila | Attila Kiss | Actor | 2012 - 2013 | 15 | |
| Kele, Irén | Irén Kele | Actor | 1939 | 1 | |
| Kiss, Ernő | Ernő Kiss | Actor | 2005 - 2006 | 2 | |
| Kricsár, Kamill | Kamill Kricsár | Actor | 2005 - 2006 | 2 | |
| Konečná, Barbora | Barbora Konečná | Costume Designer, Designer | 2013 | 2 | |
| Koláčková, Tereza | Tereza Koláčková | Composer | 2013 | 1 | |
| Kaňka, Vlastimil | Vlastimil Kaňka | Actor | 2013 | 3 | |
| Kostka, Petr | Petr Kostka | Actor | 1964 - 1994 | 8 | |
| Kočišová, Lenka | Lenka Kočišová | Actor | 2012 - 2013 | 1 | |
| Kuchinka, Lukáš | Lukáš Kuchinka | Designer | 2011 | 1 | |
| Klimešová, Daniela | Daniela Klimešová | Costume Designer | 2011 | 1 | |
| Krausová, Anita | Anita Krausová | Actor | 2009 - 2010 | 3 | |
| Konvalinová, Irena | Irena Konvalinová | Actor | 2000 - 2012 | 7 | |
| Karyo, Tcheky | Tcheky Karyo | Actor | 2003 | 6 | |
| Kéruzoré, Valérie | Valérie Kéruzoré | Actor | 2003 | 6 | |
| Kaplan, Jérôme | Jérôme Kaplan | Costume Designer | 2003 | 6 | |
| Kolonko, Bartosz | Bartosz Kolonko | Actor | 2003 | 1 | |
| Klaus, Wilfried | Wilfried Klaus | Actor | 1976 | 1 | |
| Kristensen, Ritta | Ritta Kristensen | Actor | 2003 - 2004 | 8 | |
| Keller, Tom | Tom Keller | Actor | 2003 - 2004 | 8 | |
| Kröck, Olaf | Olaf Kröck | Dramaturg | 2003 | 1 | |
| Kudláč, Jakub | Jakub Kudláč | Composer | 2010 | 5 | |
| Keller, Sarah | Sarah Keller | Actor | 2003 | 1 | |
| Kodde, Annelore | Annelore Kodde | Dramaturg | 2003 | 1 | |
| Küng, Rainer | Rainer Küng | Lighting Designer | 2003 - 2012 | 4 | |
| Kaufman, Amy | Amy Kaufman | Costume Designer | 2003 | 1 | |
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