| Kelly, Clare | Clare Kelly | Actor | 1974 | 1 | |
| Keegan, Barry | Barry Keegan | Actor | 1974 | 1 | |
| Knights, Robert | Robert Knights | Director | 1974 | 1 | |
| Kostova, Rossiza | Rossiza Kostova | Actor | 1974 | 4 | |
| Kumler, Daniel F. | Daniel F. Kumler | Actor | 1974 | 1 | |
| Krug, Eberhard , K. O. | Eberhard K. O. Krug | Actor | 1974 | 1 | |
| Kranich, Veronika | Veronika Kranich | Actor | 1974 | 1 | |
| Kagelmacher , Willi | Willi Kagelmacher | Actor | 1974 | 1 | |
| Kaulla, Guido von | Guido von Kaulla | Actor | 1974 | 1 | |
| Koch, Hermann | Hermann Koch | Actor | 1974 | 1 | |
| Kliemke, Werner | Werner Kliemke | Actor | 1974 | 1 | |
| Kihlman, Olle | Olle Kihlman | Actor | 1974 | 2 | |
| Kenton, Mary | Mary Kenton | Actor | 1974 | 1 | |
| Knight, Elizabeth | Elizabeth Knight | Actor | 1974 | 1 | |
| Kay, Richard | Richard Kay | Actor | 1974 | 1 | |
| Kamer, Martin | Martin Kamer | Costume Designer, Designer | 1974 | 12 | |
| Kamas, Jerzy | Jerzy Kamas | Actor | 1974 | 2 | |
| Kozma, Lajos | Lajos Kozma | Actor | 1974 | 1 | |
| Kovács, Ferenc | Ferenc Kovács | Designer | 1974 | 2 | |
| Koos, Zsofia | Zsofia Koos | Actor | 1974 | 1 | |
| Konstantonov, Georgij, Viktorovič | Georgij Viktorovič Konstantonov | Director | 1974 | 1 | |
| Kibart, David | David Kibart | Designer | 1974 – 1980 | 2 | |
| Karellis, Dimitris | Dimitris Karellis | Actor | 1974 – 1992 | 4 | |
| Kjærulff-Schmidt, Palle, | Palle Kjærulff-Schmidt | Director | 1974 – 2000 | 2 | |
| Krogh, Malene, | Malene Krogh | Actor | 1974 – 2000 | 2 | |
| Kielland, Jacob | Jacob Kielland | Adaptation, Translator | 1974 – 2004 | 7 | |
| Keegan, Hugh | Hugh Keegan | Director, Lighting Designer | 1974 – 2008 | 2 | |
| Kalina, Rudolf | Rudolf Kalina | Actor | 1975 | 1 | |
| Kempter, Kerstin | Kerstin Kempter | Actor | 1975 | 1 | |
| Keogh, Bernadette, | Bernadette Keogh | Choreographer | 1975 | 1 | |
| Koch, Inge | Inge Koch | Actor, Costume Designer | 1975 | 5 | |
| Krauel, Gerold | Gerold Krauel | Actor | 1975 | 1 | |
| Kralj, Petar | Petar Kralj | Actor | 1975 | 1 | |
| Kingsley, Barbara J. | Barbara J. Kingsley | Actor | 1975 | 1 | |
| Kinzinger, Gabriele | Gabriele Kinzinger | Actor | 1975 | 2 | |
| Kellermann, Werner | Werner Kellermann | Mask Maker | 1975 | 3 | |
| Klein, Barbara | Barbara Klein | Actor | 1975 | 2 | |
| 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 | |
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