| Keegan, Hugh | Hugh Keegan (Hugh Keegan) | Director, Lighting Designer | 1974 - 2008 | 2 | |
| Kalina, Rudolf | Rudolf Kalina (Rudolf Kalina) | Actor | 1975 | 1 | |
| Kempter, Kerstin | Kerstin Kempter (Kerstin Kempter) | Actor | 1975 | 1 | |
| Keogh, Bernadette | Bernadette Keogh (Bernadette Keogh) | Choreographer | 1975 | 1 | |
| Krauel, Gerold | Gerold Krauel (Gerold Krauel) | Actor | 1975 | 1 | |
| Kingsley, Barbara J. | Barbara J. Kingsley (Barbara J. Kingsley) | Actor | 1975 | 1 | |
| Klingenberg, Axel | Axel Klingenberg | Actor | 1975 | 1 | |
| Kennard, Kathy | Kathy Kennard | Actor | 1975 | 1 | |
| Kerr, Tom | Tom Kerr | Director | 1975 | 1 | |
| Keatley, Gwen | Gwen Keatley | Designer | 1975 | 1 | |
| Katzer, Maja | Maja Katzer | Actor | 1975 | 1 | |
| Kearns, Hugh | Hugh Kearns | Designer | 1975 | 1 | |
| Kopperl, Helga | Helga Kopperl | Actor | 1975 | 1 | |
| Kahler, Ernst | Ernst Kahler | Actor | 1975 | 1 | |
| Klapper, Jürgen | Jürgen Klapper | Costume Designer, Designer | 1975 | 2 | |
| Kuska, Horst | Horst Kuska | Actor | 1975 | 1 | |
| Karpeta, Eleni | Eleni Karpeta | Actor | 1975 | 4 | |
| Kourou, Gianna | Gianna Kourou | Actor | 1975 | 4 | |
| Kloke, Eberhard | Eberhard Kloke | Musical Director | 1975 | 1 | |
| Kultala, Pentti | Pentti Kultala | Actor | 1975 | 1 | |
| Kjær, Diana | Diana Kjær | Actor | 1975 | 1 | |
| Kołbasiuk, Krzysztof | Krzysztof Kołbasiuk | Actor | 1975 | 1 | |
| Kaczynski, Józef | Józef Kaczynski | Actor | 1975 | 1 | |
| Kustosik, Daniel | Daniel Kustosik | Actor | 1975 | 1 | |
| Klimczak, Ambrozy | Ambrozy Klimczak | Actor | 1975 | 1 | |
| Kryszak, Jerzy | Jerzy Kryszak | Actor | 1975 | 2 | |
| Krupinski, Wojciech | Wojciech Krupinski | Actor | 1975 | 2 | |
| Korwin, Lidia | Lidia Korwin | Actor | 1975 | 1 | |
| Kalnins, Helmuts | Helmuts Kalnins | Actor | 1975 | 1 | |
| Krödel, Knut | Knut Krödel | Actor | 1975 | 1 | |
| Kruzik, Peter | Peter Kruzik | Actor | 1975 | 1 | |
| Kloos, Agatha | Agatha Kloos | Actor | 1975 | 1 | |
| Kutlu, Gülgün | Gülgün Kutlu (Gulgun Kutlu) | Actor | 1975 | 1 | |
| Khalil, Ismail | Ismail Khalil | Director | 1975 | 1 | |
| Keogh, Barbara | Barbara Keogh | Actor | 1975 - 1976 | 2 | |
| Kjelsberg, Sverre | Sverre Kjelsberg | Actor, Composer | 1975 - 1976 | 18 | |
| Koener, Claude | Claude Koener (Claude Koener) | Actor | 1975 - 1977 | 10 | |
| Kolář, Zbynĕk | Zbynĕk Kolář (Zbynĕk Kolář) | Costume Designer, Designer | 1975 - 1978 | 3 | |
| Kołodziej, Marian | Marian Kołodziej | Designer | 1975 - 1979 | 2 | |
| Kılıç, Sadrettin | Sadrettin Kılıç (Sadrettin Kilic) | Actor | 1975 - 1982 | 2 | |
| Kavanaugh, Richard | Richard Kavanaugh | Actor | 1975 - 1983 | 3 | 1 |
| Kralj, Petar | Petar Kralj (Petar Kralj) | Actor | 1975 - 1984 | 2 | |
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