| Kabelák, Jiří | Jiří Kabelák | Actor | 1965 | 2 | |
| Kettner, Josef | Josef Kettner | Actor | 1965 | 1 | |
| Kníže, Jaroslav | Jaroslav Kníže | Actor | 1965 | 2 | |
| Křížková, Jitka | Jitka Křížková | Designer | 1965 | 1 | |
| Keiser, Ann | Ann Keiser | Actor | 1965 | 1 | |
| Kóti, Árpád | Árpád Kóti | Actor | 1965 | 3 | |
| Kimmins, Kenneth | Kenneth Kimmins | Actor | 1965 | 1 | |
| Kelley, Hugh | Hugh Kelley | Actor | 1965 | 2 | |
| Kourey, Saundra | Saundra Kourey | Actor | 1965 | 1 | |
| Kahlke, Erich | Erich Kahlke | Actor | 1965 | 1 | |
| Klimša, Antonín | Antonín Klimša | Actor | 1965 | 1 | |
| Klazar, Vladimír | Vladimír Klazar | Actor | 1965 | 1 | |
| Katner, Myra | Myra Katner | Actor | 1965 | 1 | |
| Kelly, Martin, L. | Martin L. Kelly | Actor | 1965 | 1 | |
| Kleemann, Fredi | Fredi Kleemann | Actor | 1965 | 2 | |
| Kneidinger, Lola | Lola Kneidinger | Actor | 1965 | 1 | |
| Kaiser, M.-G. | M.-G. Kaiser | Actor | 1965 | 1 | |
| Kreuziger, Peter | Peter Kreuziger | Actor | 1965 | 2 | |
| Kumano, Ryuji | Ryuji Kumano | Designer | 1965 | 1 | |
| Kovács, Dezső | Dezső Kovács | Director | 1965 | 1 | 1 |
| Kovács, Katalin | Katalin Kovács | Director | 1965 | 1 | |
| Kozovlich, Lidija | Lidija Kozovlich | Actor | 1965 | 1 | |
| Kostka, Petr | Petr Kostka | Actor | 1964 - 2016 | 8 | 1 |
| Kulke, Konrad | Konrad Kulke | Costume Designer, Designer | 1964 - 2005 | 6 | 1 |
| Kleiber, Eleonore | Eleonore Kleiber | Costume Designer | 1964 - 2000 | 53 | |
| Kuple, Dina | Dina Kuple | Actor | 1964 - 1993 | 3 | 1 |
| Korposoff, Lars | Lars Korposoff | Actor | 1964 - 1991 | 24 | |
| Kanakis, Vasilis | Vasilis Kanakis | Actor | 1964 - 1990 | 4 | |
| Kunath, Gerd | Gerd Kunath | Actor | 1964 - 1990 | 2 | 1 |
| Koch, Knut | Knut Koch | Actor | 1964 - 1985 | 2 | |
| Kayser, Karl | Karl Kayser | Adaptation, Director | 1964 - 1984 | 3 | |
| Kneissler, Rose | Rose Kneissler | Actor | 1964 - 1977 | 3 | |
| Korn, Werner | Werner Korn | Actor | 1964 - 1977 | 3 | |
| Krūze, Velta | Velta Krūze | Actor | 1964 - 1975 | 2 | |
| Kantane, Ausma | Ausma Kantane | Actor | 1964 - 1975 | 2 | |
| Kalpaks, Alfons | Alfons Kalpaks | Actor | 1964 - 1975 | 2 | |
| Kontoulis, Giannis | Giannis Kontoulis | Actor | 1964 - 1975 | 3 | |
| Köttel, Heinz | Heinz Köttel | Costume Designer, Designer | 1964 - 1973 | 4 | |
| Krüger, Hannes | Hannes Krüger | Actor | 1964 - 1971 | 3 | |
| Klaus, Rudolf U. | Rudolf U. Klaus | Translator | 1964 - 1971 | 4 | |
| Knapp, Terence | Terence Knapp | Actor | 1964 - 1965 | 5 | |
| Knight, Donald | Donald Knight | Actor | 1964 | 1 | |
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