| Kontogianni, Rena | Rena Kontogianni | Translator | 1986 - 2013 | 4 | 1 |
| Krkošková, Ľuba | Ľuba Krkošková | Actor | 1993 | 1 | 1 |
| Kožuch, Ján | Ján Kožuch | Actor | 1993 | 1 | 1 |
| Katz, Leon | Leon Katz | Adaptation, Dramaturg, Translator | 1983 | 3 | 1 |
| Kennedy, Laurie | Laurie Kennedy | Actor | 1983 - 2016 | 2 | 1 |
| Klunis, Tom | Tom Klunis | Actor | 1983 | 1 | 1 |
| Kauppi, Lo | Lo Kauppi | Actor | 1998 | 1 | 1 |
| Kolářová, Daniela | Daniela Kolářová | Actor | 2004 - 2013 | 3 | 1 |
| Kingdon, James | James Kingdon | Actor | 2007 - 2021 | 4 | 1 |
| Klötzke, Ernst, August | Ernst August Klötzke | Musical Director, Musician | 2008 | 2 | 1 |
| Kraus, Uwe | Uwe Kraus | Actor | 2000 - 2016 | 5 | 1 |
| Karner, Markus | Markus Karner | Designer | 2008 - 2010 | 2 | 1 |
| Krettek, Mareile | Mareile Krettek | Costume Designer | 2008 | 1 | 1 |
| Kulle, Jarl | Jarl Kulle | Actor | 1950 - 1994 | 2 | 1 |
| Kapelonis, Kostis | Kostis Kapelonis | Director | 2002 - 2010 | 7 | 1 |
| Körner, Dietrich | Dietrich Körner | Actor | 1983 - 1989 | 2 | 1 |
| Kalmár, Zsuzsa | Zsuzsa Kalmár | Actor | 2011 | 2 | 1 |
| Körmöci, Petronella | Petronella Körmöci | Actor | 2011 | 2 | 1 |
| Kassar, Ayez | Ayez Kassar | Actor | 2011 | 1 | 1 |
| Kaas, Nikolaj, Lie | Nikolaj Lie Kaas | Actor | 2001 | 1 | 1 |
| Keir, Phillip | Phillip Keir | Director, Translator | 1984 | 2 | 1 |
| Kirschner, Joan | Joan Kirschner | Actor | 1984 | 1 | 1 |
| Koberg, Roland | Roland Koberg | Adaptation, Dramaturg | 2013 | 2 | 1 |
| Kowalski, Rudolf | Rudolf Kowalski | Actor | 1985 | 1 | 1 |
| Konarek, Ernst | Ernst Konarek | Actor | 1985 - 2005 | 12 | 1 |
| Kresnik, Johann | Johann Kresnik | Choreographer, Director | 2003 | 4 | 1 |
| Kárová, Darina | Darina Kárová | Adaptation, Dramaturg | 1985 | 2 | 1 |
| Kremer, Hans | Hans Kremer | Actor | 1985 - 2017 | 6 | 1 |
| Karajan, Isabel | Isabel Karajan | Actor | 1985 | 1 | 1 |
| Kurt, Stefan | Stefan Kurt | Actor | 1985 - 2005 | 2 | 1 |
| Kinzer, Craig D., D. | Craig D. Kinzer | Director | 1985 | 1 | 1 |
| Kristensen, Jeppe | Jeppe Kristensen | Director | 2014 - 2016 | 7 | 1 |
| Kirchner, Ignaz | Ignaz Kirchner | Actor | 1984 - 2017 | 4 | 1 |
| Köper, Carmen-Renate | Carmen-Renate Köper | Actor | 1953 - 2006 | 6 | 1 |
| Kavanagh, John | John Kavanagh | Actor | 1984 - 2011 | 3 | 1 |
| Kammer, Nancy-Elizabeth | Nancy-Elizabeth Kammer | Actor | 1990 - 2019 | 2 | 1 |
| Kelly, David | David Kelly | Actor | 1989 - 2024 | 4 | 1 |
| Keeler, Dana | Dana Keeler | Actor | 1982 - 1990 | 2 | 1 |
| Klein, Katrin | Katrin Klein | Actor | 1990 - 1997 | 2 | 1 |
| Kleiven, Kari, Ulfsnes | Kari Ulfsnes Kleiven | Actor | 2014 | 3 | 1 |
| King, Peter | Peter King | Director | 2013 | 1 | 1 |
| Knight, Lily | Lily Knight | Actor | 1984 - 1995 | 2 | 1 |
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