| Kowalski, Władysław | Władysław Kowalski | Actor | 1972 - 2006 | 9 | |
| Kalser, Erwin | Erwin Kalser | Actor, Director | 1914 - 1950 | 9 | |
| Kaghanovitch, Peter | Peter Kaghanovitch | Actor | 1997 - 2009 | 9 | |
| Köhler, Henning | Henning Köhler | Actor | 1974 - 1993 | 9 | |
| Kotarbiński, Józef | Józef Kotarbiński | Actor, Director | 1882 - 1908 | 9 | |
| Kreindl, Werner | Werner Kreindl | Actor | 1972 - 2003 | 9 | |
| Kreutz, Sebastian | Sebastian Kreutz | Actor | 2004 - 2005 | 9 | |
| Kriegeskotte, Hedi | Hedi Kriegeskotte | Actor | 1973 - 2014 | 9 | |
| Kustermann, Manuela | Manuela Kustermann | Actor | 1981 - 1993 | 9 | |
| Kortner, Fritz | Fritz Kortner | Actor, Adaptation, Director | 1923 - 1964 | 9 | 1 |
| Keller, Eva Maria | Eva Maria Keller | Actor | 2003 - 2013 | 9 | 2 |
| Kachel-Bender, Luise | Luise Kachel-Bender | Actor | 1891 - 1905 | 9 | |
| Knudsen, Ove | Ove Knudsen | Actor | 1899 - 1904 | 9 | |
| Kapila, Sohn | Sohn Kapila | Actor | 2006 | 9 | |
| Kronacher, Dr. Alwin | Alwin Kronacher (Dr. Alwin Kronacher) | Director | 1911 - 1925 | 9 | |
| Knuth, Gustav | Gustav Knuth | Actor | 1924 - 1964 | 9 | |
| Krastev, Dr. Krastjo | Krastjo Krastev (Dr. Krastjo Krastev) | Actor, Translator | 1905 - 1996 | 9 | |
| Kingdon, Frank | Frank Kingdon | Actor | 1906 - 1907 | 9 | |
| Kristiansen, Thor Inge | Thor Inge Kristiansen | Actor | 1949 - 1974 | 9 | |
| Kent, Jonathan | Jonathan Kent | Actor, Director | 1977 - 2019 | 9 | |
| Korstad, Liv Jorunn | Liv Jorunn Korstad | Actor | 1994 - 2001 | 9 | |
| Krook, Margaretha | Margaretha Krook | Actor | 1950 - 1997 | 9 | |
| Kosmo, Ingebjørg | Ingebjørg Kosmo | Actor | 2001 - 2014 | 9 | |
| Kolaas, Harald | Harald Kolaas | Actor | 2009 - 2015 | 9 | |
| Klouman, Borghild | Borghild Klouman | Actor | 1928 - 1931 | 9 | |
| Keresztes, Tamás | Tamás Keresztes | Actor | 2007 - 2019 | 9 | |
| Kurze, Günter | Günter Kurze | Actor | 1972 - 1995 | 9 | |
| Kitson, Barbara | Barbara Kitson | Actor, Dancer | 1923 - 1924 | 9 | |
| Konstantopoulos, Christos | Christos Konstantopoulos | Actor | 1985 | 9 | |
| Kopit, Arthur | Arthur Kopit | Translator | 1982 - 2010 | 9 | |
| Kremp, Jan-Gregor | Jan-Gregor Kremp | Actor | 1995 | 9 | |
| Kopp, Dave | Dave Kopp | Actor | 2002 | 9 | |
| Kuhn, Gabriela | Gabriela Kuhn | Actor | 2002 | 9 | |
| Koležnik, Mateja | Mateja Koležnik | Director | 2002 - 2022 | 9 | |
| Kecsek, Karina | Karina Kecsek | Actor | 2001 - 2003 | 9 | |
| Kremer, Ulrike | Ulrike Kremer | Costume Designer | 2001 - 2003 | 9 | |
| Kovtun, Georgij | Georgij Kovtun | Adaptation, Choreographer, Director | 2003 - 2013 | 9 | |
| Knuts, Johan | Johan Knuts | Actor | 2004 | 9 | |
| Krüger, Jörg F. | Jörg F. Krüger | Actor | 2005 - 2010 | 9 | |
| Kirsch, Uli | Uli Kirsch | Actor | 2006 | 9 | |
| Klemt, Katja | Katja Klemt | Actor | 2009 - 2010 | 9 | |
| Kiritzé-Topor, Amélie | Amélie Kiritzé-Topor | Designer | 2013 - 2014 | 9 | |
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