| Kley, Wilhelmina | Wilhelmina Kley | Actor | 1917 | 2 | |
| Karina, Staicova | Staicova Karina | Designer | 2008 | 4 | |
| Kinga, Luca | Luca Kinga | Choreographer | 2010 | 2 | |
| Kas'janova, Gennadija | Gennadija Kas'janova | Director | 2004 | 1 | |
| Kaalstad, Nils Jørgen, | Nils Jørgen Kaalstad | Actor | 1992 - 2020 | 5 | |
| Kleiva, Dagny Drage, | Dagny Drage Kleiva | Costume Designer, Designer | 2009 - 2015 | 40 | |
| Klepikov, Anya | Anya Klepikov | Costume Designer, Designer | 2011 | 2 | |
| Kruger, Ben | Ben Kruger | Actor | 1985 | 1 | |
| Kilavuz, Aram | Aram Kilavuz | Actor | 2010 | 8 | |
| Karabekir, Jale | Jale Karabekir | Director, Translator | 2010 - 2018 | 17 | |
| Kassabi, Nathan | Nathan Kassabi | Actor | 2010 | 2 | |
| Kordeck, Hans | Hans Kordeck | Actor | 2002 | 1 | |
| Koch, Cedric Joel | Cedric Joel Koch | Actor | 2011 - 2012 | 2 | |
| Kingsley, Barbara J. | Barbara J. Kingsley | Actor | 1975 | 1 | |
| Kostolitz, Stefan | Stefan Kostolitz | Actor | 2010 | 1 | |
| Kinnear, Sherry | Sherry Kinnear | Costume Designer | 2011 | 2 | |
| Kidd, Steve | Steve Kidd | Actor | 2004 - 2011 | 2 | |
| Kane, Jeanine | Jeanine Kane | Actor | 2004 - 2011 | 2 | |
| Kane, Brigid | Brigid Kane | Actor | 2011 | 1 | |
| Kane, Fiona | Fiona Kane | Actor | 2011 | 1 | |
| Khare, Lavanya | Lavanya Khare | Costume Designer | 2010 | 1 | |
| Kher, Shikha | Shikha Kher | Sound Designer | 2010 | 1 | |
| Krondiris, Giorgos | Giorgos Krondiris | Actor | 2010 - 2011 | 1 | |
| Kamtsis, Nikos | Nikos Kamtsis | Actor, Designer, Director, Lighting Designer, Translator | 2010 - 2020 | 6 | |
| Karmona, Benito | Benito Karmona | Actor | 2009 | 1 | |
| Kook, Beryl | Beryl Kook | Actor | 1917 | 2 | |
| Kerpen, Lori | Lori Kerpen | Actor | 1952 | 2 | |
| Kowalska, Wanda | Wanda Kowalska | Costume Designer | 2008 | 1 | |
| Kerlé, Heta | Heta Kerlé | Costume Designer | 1954 | 2 | |
| Kölbl, Inge, | Inge Kölbl | Actor | 1943 - 1944 | 3 | |
| Ksoll, Josef, | Josef Ksoll | Costume Designer | 1943 - 1944 | 3 | |
| Klausen, Sigurd Aae, | Sigurd Aae Klausen | Actor, Director | 1994 - 2011 | 7 | |
| Kovalčiukas, Vladimiras | Vladimiras Kovalčiukas | Designer | 1988 | 1 | |
| Kruszynski, Willy, | Willy Kruszynski | Actor, Director | 1900 | 4 | |
| Krahé, Josef, | Josef Krahé | Actor | 1928 | 1 | |
| Kirchleitner, Lydia | Lydia Kirchleitner | Costume Designer | 2006 - 2013 | 7 | |
| Kappner, Max, | Max Kappner | Actor, Director | 1889 | 6 | |
| Krause, Milla, | Milla Krause | Actor | 1889 | 1 | |
| Karp, Kenneth | Kenneth Karp | Actor | 1973 | 1 | |
| Klein, Ralph | Ralph Klein | Director | 1973 | 1 | |
| Kuttner, Gabriel | Gabriel Kuttner | Actor | 2011 | 1 | |
| Kawecki, Kathryn | Kathryn Kawecki | Designer | 2010 - 2011 | 2 | |
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