| Kallenbach, Ilse | Ilse Kallenbach | Actor | 1974 | 1 | |
| Künemund, Günter | Günter Künemund | Actor | 1959 - 1990 | 3 | |
| Klein, Heinz Joachim | Heinz Joachim Klein | Director | 1960 - 1975 | 2 | |
| Kellermann, Werner | Werner Kellermann | Mask Maker | 1975 - 1984 | 3 | |
| Kerr, Jarvis | Jarvis Kerr | Actor | 1926 - 1927 | 7 | |
| Kenton, Godfrey | Godfrey Kenton | Actor | 1927 - 1928 | 2 | |
| Karellis, Dimitris | Dimitris Karellis | Actor | 1974 - 1992 | 4 | |
| Kupka, Karel | Karel Kupka | Composer | 1973 | 1 | |
| Kaschenz, Kurt | Kurt Kaschenz | Director | 1974 | 1 | |
| Krejčová, Magda | Magda Krejčová | Actor | 1928 | 2 | |
| Koubová, Milena | Milena Koubová | Actor | 1971 | 1 | |
| Kalmár, Péter | Péter Kalmár | Actor | 1974 | 1 | |
| Kubín, Josef | Josef Kubín | Actor | 1971 | 1 | |
| Keresztes, Pál | Pál Keresztes | Actor | 1974 | 1 | |
| Kozák, Zdenĕk | Zdenĕk Kozák | Actor | 1971 | 1 | |
| Keogh, Barbara | Barbara Keogh | Actor | 1975 - 1976 | 2 | |
| Kube, Christian | Christian Kube | Actor | 1973 | 1 | |
| Kooperstein, Maureen | Maureen Kooperstein | Actor | 1973 | 1 | |
| Kohler, John | John Kohler | Actor | 1973 | 1 | |
| Kępa, Andrzej | Andrzej Kępa | Actor | 1974 | 1 | |
| Kile, Bruce | Bruce Kile | Actor | 1973 | 1 | |
| Krawczykowska, Irena | Irena Krawczykowska | Actor | 1974 | 1 | |
| Karnecki, Zbigniew | Zbigniew Karnecki | Musical Director | 1974 | 1 | |
| Kosiorek, Andrew | Andrew Kosiorek | Lighting Designer | 1973 | 1 | |
| Kottas, Hanna | Hanna Kottas | Actor | 1974 | 1 | |
| Kroneberg, Immo | Immo Kroneberg | Actor | 1974 - 1975 | 2 | |
| Kafkaridis, Stelios | Stelios Kafkaridis | Actor | 1974 | 7 | |
| Karantinos, Sokratis | Sokratis Karantinos | Director | 1974 | 7 | |
| Kuzyszyn, Ryszard | Ryszard Kuzyszyn | Designer | 1971 | 1 | |
| Kłopocki, Włodzimierz | Włodzimierz Kłopocki | Actor | 1971 | 1 | |
| Kwaśniewska, Sława | Sława Kwaśniewska | Actor | 1971 | 1 | |
| Kordziński, Roman | Roman Kordziński | Director | 1968 - 1971 | 3 | |
| Koppendorfer, Franz | Franz Koppendorfer | Costume Designer, Designer | 1973 | 2 | |
| Kuck, Gerd Leo | Gerd Leo Kuck | Director, Dramaturg | 1972 - 1996 | 4 | |
| Klouman, Borghild | Borghild Klouman | Actor | 1928 - 1931 | 9 | |
| Kibart, David | David Kibart | Designer | 1974 - 1980 | 2 | |
| Kasten, Thomas | Thomas Kasten | Actor | 1973 - 2014 | 6 | |
| Kilian, Rosemarie | Rosemarie Kilian | Actor | 1966 - 1974 | 2 | |
| Köttel, Heinz | Heinz Köttel | Costume Designer, Designer | 1964 - 1973 | 4 | |
| Kosugi, Yoshio | Yoshio Kosugi | Actor | 1925 - 1928 | 2 | |
| Kaupiņa, Mirdza | Mirdza Kaupiņa | Actor | 1928 | 1 | |
| Kump, Mary Helen | Mary Helen Kump | Actor | 1928 | 1 | |
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