| Kammerer, Georg | Georg Kammerer | Designer | 1991 | 1 | |
| Karadimas, Taki | Taki Karadimas | Actor | 1991 | 1 | |
| Kock, Daniela | Daniela Kock | Actor, Costume Designer | 1991 | 4 | |
| Kunze, Susanne | Susanne Kunze | Actor | 1991 | 1 | |
| Kaps-Zurmahr, Helmut | Helmut Kaps-Zurmahr | Actor | 1956 - 1959 | 2 | |
| Kellner, Helmut | Helmut Kellner | Actor | 1991 | 3 | |
| Kanter, Christoph | Christoph Kanter | Designer | 1988 | 1 | |
| Kurš, Antonín | Antonín Kurš | Director | 1939 - 1956 | 2 | |
| Korpi, Jukka | Jukka Korpi | Actor | 1991 - 1993 | 20 | |
| Kossowsky, Jorge | Jorge Kossowsky | Assistant Director, Director | 1952 - 1956 | 3 | |
| Kropff, Joop | Joop Kropff | Costume Designer, Designer | 1956 | 2 | |
| Karsten, Fred | Fred Karsten | Actor | 1956 - 1963 | 3 | |
| Kinge, Hans Jakob | Hans Jakob Kinge | Actor | 1953 - 2006 | 7 | |
| Kealey, Patrick | Patrick Kealey | Director | 1992 | 1 | |
| Klar, Wolfgang | Wolfgang Klar | Director | 1992 | 1 | |
| Klopfstock, Susanne | Susanne Klopfstock | Costume Designer, Designer | 1992 | 2 | |
| Keats, David | David Keats | Actor | 1992 | 1 | |
| Köhntopp, Katharina | Katharina Köhntopp | Actor | 1992 | 1 | |
| Kokoschka, M. | M. Kokoschka | Actor | 1992 | 1 | |
| Keuchel, Jürgen-Helmut | Jürgen-Helmut Keuchel | Actor, Adaptation | 1992 - 2015 | 2 | |
| Kulle, Gerthi | Gerthi Kulle | Actor | 1991 - 1993 | 15 | |
| Karamiteva, Margarita | Margarita Karamiteva | Actor | 1988 | 1 | |
| Karaivanova, Zhana | Zhana Karaivanova | Actor | 1988 | 1 | |
| Kwiatkowska, Tatiana | Tatiana Kwiatkowska | Costume Designer | 1991 - 1997 | 2 | |
| Krukówna, Agnieszka | Agnieszka Krukówna | Actor | 1991 - 1997 | 4 | |
| King, Howard | Howard King | Lighting Designer | 1988 | 1 | |
| Klein, Steven M. | Steven M. Klein | Sound Designer | 1992 | 1 | |
| Kaiser, Doris, Maria | Doris Maria Kaiser | Actor | 1992 | 1 | |
| Katz, Natasha | Natasha Katz | Lighting Designer | 1992 - 2009 | 2 | |
| Krikorian, Paul | Paul Krikorian | Actor | 1988 | 1 | |
| Knott, Dewayne | Dewayne Knott | Director | 1988 | 1 | |
| Kemp, Brian | Brian Kemp | Actor | 1992 | 2 | |
| Kingshott, Dennis | Dennis Kingshott | Lighting Designer | 1992 | 2 | |
| Kouwenhoven, Annet | Annet Kouwenhoven | Actor | 1988 - 2000 | 7 | |
| Kulle, Maria | Maria Kulle | Actor | 1992 | 1 | |
| Kistler, Sabine | Sabine Kistler | Actor | 1992 | 1 | |
| Kerpel, Roger Van | Roger Van Kerpel | Actor | 1992 - 2001 | 7 | |
| Kunze, Dietrich | Dietrich Kunze | Director | 1992 | 1 | |
| Kötz, Franziska | Franziska Kötz | Dramaturg | 1992 - 2006 | 2 | |
| Kraupa, Arpád | Arpád Kraupa | Actor | 1988 | 1 | |
| Krane, Målfrid | Målfrid Krane | Actor | 1988 | 1 | |
| Kreituse, A | A, Kreituse | Costume Designer | 1992 | 1 | |
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