| Kontogiannis, Kostas | Kostas Kontogiannis | Actor | 1984 | 1 | |
| Koppers, Angela | Angela Koppers | Costume Designer | 1987 | 1 | |
| Koopman, Carlus | Carlus Koopman | Lighting Designer | 1987 | 1 | |
| Kołodziejczyk, Jerzy | Jerzy Kołodziejczyk | Director | 1990 | 1 | |
| Komorowska, Małgorzata | Małgorzata Komorowska | Designer | 1990 | 1 | |
| Kiesewetter, Ekkehard | Ekkehard Kiesewetter | Director | 1990 | 1 | |
| Klugt, Niko van der | Niko van der Klugt | Designer, Lighting Designer | 1991 | 2 | |
| Kimman, Mirjam | Mirjam Kimman | Musician | 1991 | 1 | |
| Krumrey, Jürgen | Jürgen Krumrey | Actor | 1990 | 1 | |
| Kreutzer, Fred | Fred Kreutzer | Actor | 1990 | 1 | |
| Kaupenjohann, Bernd | Bernd Kaupenjohann | Designer | 1990 | 1 | |
| Klugt, Nathalie, van der | Nathalie van der Klugt | Actor | 1991 | 2 | |
| Kouwenberg, Jasper , Klein | Jasper Klein Kouwenberg | Actor | 1991 | 3 | |
| Krohm, Uli | Uli Krohm | Actor | 1990 | 1 | |
| Kotsiris, Lampros | Lampros Kotsiris | Actor | 1988 | 1 | |
| Krogh, Guy | Guy Krogh | Designer | 1956 - 1988 | 3 | |
| Klein, Nita | Nita Klein | Actor | 1989 | 1 | |
| Kerckhoffs, Han | Han Kerckhoffs | Actor | 1990 - 2013 | 30 | |
| Kirk, Jeffrey | Jeffrey Kirk | Dancer | 1989 - 1990 | 2 | |
| Klement, Susanne | Susanne Klement | Dancer | 1989 - 1990 | 2 | |
| Kritzinger, Johannes | Johannes Kritzinger | Dancer | 1989 - 1990 | 2 | |
| Kruschke, Annett | Annett Kruschke | Actor, Choreographer, Director | 1988 - 2006 | 4 | |
| Krogh, Line | Line Krogh | Director | 1977 - 1988 | 3 | |
| Krystoph, Volker | Volker Krystoph | Actor | 1958 - 1988 | 3 | |
| Kautek, Rudolf | Rudolf Kautek | Director | 1966 - 1988 | 2 | |
| Kondrat'ev, Aleksey | Aleksey Kondrat'ev (Алексей Кондратьев) | Designer | 2011 | 1 | |
| Koshevaya, Anzhelika | Anzhelika Koshevaya (Анжелика Кошевая) | Actor | 2011 | 1 | |
| Kepros, Nicholas | Nicholas Kepros | Actor | 1960 - 1988 | 6 | |
| Keith, Warren | Warren Keith | Actor | 1988 - 2003 | 2 | |
| Křenek, Emanuel | Emanuel Křenek | Actor | 1965 - 1988 | 2 | |
| Kostřiba, Josef | Josef Kostřiba | Musical Director | 1988 | 1 | |
| Kyritsis, Giorgos | Giorgos Kyritsis | Actor | 1990 | 1 | |
| Kresta, Eirini | Eirini Kresta | Actor | 1990 | 1 | |
| Kalfagiannis, Giorgos | Giorgos Kalfagiannis | Lighting Designer | 1990 | 1 | |
| Kupfernagel, Matthias | Matthias Kupfernagel | Designer | 1988 | 1 | |
| Kiefel, Russell | Russell Kiefel | Actor | 1988 - 1989 | 2 | |
| Kingelin, Juha | Juha Kingelin | Actor | 1988 | 1 | |
| Kruger, Beatrice | Beatrice Kruger | Actor | 1988 | 1 | |
| Kraft, Karin | Karin Kraft | Actor | 1991 | 1 | |
| Krug, Ines | Ines Krug | Actor | 1991 - 2006 | 7 | |
| Kuhn, Hans Peter | Hans Peter Kuhn | Composer, Sound Designer | 1991 - 1993 | 7 | |
| Kunze, Rüdiger Walter | Rüdiger Walter Kunze | Actor, Director | 1991 - 2004 | 3 | |
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