| Kabi, Neeraj | Neeraj Kabi | Actor, Adaptation, Designer, Director | 2009 - 2010 | 4 | |
| Kropf, Robert | Robert Kropf | Actor, Adaptation, Designer, Director | 2012 - 2017 | 5 | |
| Körner, Roland | Roland Körner | Actor, Adaptation, Designer | 1987 | 3 | |
| Klan, Rune | Rune Klan | Actor, Adaptation | 2005 - 2006 | 18 | 4 |
| Keuchel, Jürgen-Helmut | Jürgen-Helmut Keuchel | Actor, Adaptation | 1992 - 2015 | 2 | |
| Kiss-Végh, Emőke | Emőke Kiss-Végh | Actor, Adaptation | 2009 - 2016 | 7 | 3 |
| Kuehner, Jody | Jody Kuehner | Actor, Adaptation | 2017 | 2 | |
| Knapton, Alice | Alice Knapton | Actor, Adaptation | 2018 | 40 | |
| Kuhlmann, Carl | Carl Kuhlmann | Actor | 1937 - 1957 | 5 | |
| Karimi, Niki | Niki Karimi | Actor | 1993 | 1 | 1 |
| King, Dennis | Dennis King | Actor | 1937 - 1938 | 7 | 1 |
| Kajdassy, Ferike | Ferike Kajdassy | Actor | 1941 | 1 | |
| Kovács, Irénke | Irénke Kovács | Actor | 1941 | 1 | |
| Keller, A | A Keller | Actor | 1994 | 1 | |
| Kryzova, N. V. | N. V. Kryzova | Actor | 1907 | 1 | |
| Kozina, A | A Kozina | Actor | 1914 | 1 | |
| Kretisčenko, S. | S. Kretisčenko | Actor | 1914 | 1 | |
| Kiroff, S | S Kiroff | Actor | 1908 | 1 | |
| Kirsten, Stefanie | Stefanie Kirsten | Actor | 1990 - 2008 | 2 | |
| Khanlarova, Mehriban | Mehriban Khanlarova | Actor | 2006 | 1 | |
| Krogh, Malene | Malene Krogh | Actor | 1974 - 2000 | 2 | |
| Kępińska, Elżbieta | Elżbieta Kępińska | Actor | 1962 - 1975 | 2 | |
| Kowalski, Władysław | Władysław Kowalski | Actor | 1972 - 2006 | 9 | 1 |
| Keller, Achim | Achim Keller | Actor | 1997 | 1 | |
| Kratzel, Corinna | Corinna Kratzel | Actor | 1997 | 1 | |
| Kośnierska, Janina | Janina Kośnierska | Actor | 1906 | 1 | |
| Klöpfer, Eugen | Eugen Klöpfer | Actor | 1914 - 1937 | 11 | 1 |
| Kalotai, Teri | Teri Kalotai | Actor | 1928 | 1 | |
| Kucharesin, Valerij | Valerij Kucharesin | Actor | 2003 - 2006 | 2 | 1 |
| Kammerzell, Gertie | Gertie Kammerzell | Actor | 1934 | 1 | |
| Kovanko, Lilga | Lilga Kovanko | Actor | 1977 - 1978 | 2 | 1 |
| Kărkelanov, Georgi | Georgi Kărkelanov | Actor | 2006 | 1 | |
| Kern, András | András Kern | Actor | 1989 | 2 | |
| Kiss, Jenő | Jenő Kiss | Actor | 1989 | 2 | |
| Kausch, Michael | Michael Kausch | Actor | 1979 - 2003 | 11 | |
| Kirshenbaum, Debra | Debra Kirshenbaum | Actor | 2006 | 1 | 1 |
| Koren, Adam | Adam Koren | Actor | 2006 | 1 | |
| Koren, Sophia Bella | Sophia Bella Koren | Actor | 2006 | 1 | |
| Kusche, Mathias | Mathias Kusche | Actor | 1994 - 2011 | 13 | 2 |
| Klein, Karin | Karin Klein | Actor | 1987 - 2007 | 4 | |
| Koschitz, Julia | Julia Koschitz | Actor | 2006 | 3 | 1 |
| Kaminsky, Andrej | Andrej Kaminsky | Actor | 1999 - 2007 | 3 | |
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