| Knuth, Bodo | Bodo Knuth | Actor | 1964 | 1 | |
| Kaipf, Gerda | Gerda Kaipf | Actor | 1964 | 1 | |
| Keshavarz, Mohammad Ali | Mohammad Ali Keshavarz | Actor | 1964 | 1 | |
| Karel, Mike | Mike Karel | Actor | 1964 | 3 | |
| Keller, Gert | Gert Keller | Director | 1964 | 1 | |
| Köhnke, Horst | Horst Köhnke | Actor | 1964 | 1 | |
| Koppel, Herman, D. | Herman D. Koppel | Composer, Conductor | 1964 | 2 | |
| Kurt, Hans | Hans Kurt | Actor | 1964 | 1 | |
| Kiil, Jørgen | Jørgen Kiil | Actor | 1964 | 1 | |
| Kenny, Jan | Jan Kenny | Actor | 1964 | 1 | |
| Katz, Zulema | Zulema Katz | Actor | 1964 | 1 | |
| Knapp, Terence | Terence Knapp | Actor | 1964 - 1965 | 5 | |
| Krüger, Hannes | Hannes Krüger | Actor | 1964 - 1971 | 3 | |
| Klaus, Rudolf U. | Rudolf U. Klaus | Translator | 1964 - 1971 | 4 | |
| Köttel, Heinz | Heinz Köttel | Costume Designer, Designer | 1964 - 1973 | 4 | |
| 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 | |
| Kneissler, Rose | Rose Kneissler | Actor | 1964 - 1977 | 3 | |
| Korn, Werner | Werner Korn | Actor | 1964 - 1977 | 3 | |
| Kayser, Karl | Karl Kayser | Adaptation, Director | 1964 - 1984 | 3 | |
| Koch, Knut | Knut Koch | Actor | 1964 - 1985 | 2 | |
| Kanakis, Vasilis | Vasilis Kanakis | Actor | 1964 - 1990 | 4 | |
| Kunath, Gerd | Gerd Kunath | Actor | 1964 - 1990 | 2 | 1 |
| Korposoff, Lars | Lars Korposoff | Actor | 1964 - 1991 | 24 | |
| Kuple, Dina | Dina Kuple | Actor | 1964 - 1993 | 3 | 1 |
| Kleiber, Eleonore | Eleonore Kleiber | Costume Designer | 1964 - 2000 | 53 | |
| Kulke, Konrad | Konrad Kulke | Costume Designer, Designer | 1964 - 2005 | 6 | 1 |
| Kostka, Petr | Petr Kostka | Actor | 1964 - 2016 | 8 | 1 |
| Kardos, József | József Kardos | Actor | 1965 | 1 | |
| Kolossváry, Szilvia | Szilvia Kolossváry | Actor | 1965 | 1 | |
| Kraus, Josef | Josef Kraus | Actor | 1965 | 1 | |
| Korsan, Noemi | Noemi Korsan | Director | 1965 | 1 | |
| Keczer, András | András Keczer | Actor | 1965 | 1 | |
| Kovács, István | István Kovács | Actor | 1965 | 1 | |
| Knížetová, Danuta | Danuta Knížetová | Actor | 1965 | 1 | |
| Kotrba, Jaroslav | Jaroslav Kotrba | Actor | 1965 | 2 | |
| 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 | |
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