| Kavanaugh, Clarence | Clarence Kavanaugh | Actor | 1929 | 1 | |
| King, Douglas | Douglas King | Actor | 1929 | 1 | |
| Krause, Gertrud | Gertrud Krause | Actor | 1912 | 1 | |
| Kristen-von Hopffgarten, Erika | Erika Kristen von Hopffgarten | Actor | 1929 | 2 | |
| Kinch, Martin | Martin Kinch | Actor, Director | 1967 - 1973 | 4 | |
| Kinch, Miro | Miro Kinch | Designer | 1972 - 1973 | 2 | |
| Kotanen, Ed | Ed Kotanen | Designer | 1972 | 1 | |
| Kreppel, Herbert | Herbert Kreppel | Director | 1966 - 1972 | 2 | |
| Kiesler, Walter | Walter Kiesler | Actor | 1972 | 1 | |
| Kappel, Günter | Günter Kappel | Costume Designer | 1956 - 1985 | 3 | |
| Kokkakis, Kostas | Kostas Kokkakis | Actor | 1972 - 1990 | 4 | |
| Kanakis, Vasilis | Vasilis Kanakis | Actor | 1964 - 1990 | 4 | |
| Kremel, Joaquín | Joaquín Kremel | Actor | 1983 | 1 | |
| Krähe, Julius | Julius Krähe | Actor | 1901 | 1 | |
| König, Hans | Hans König | Actor | 1921 - 1933 | 3 | |
| Knickrehm, Julie | Julie Knickrehm | Actor | 1972 | 1 | |
| Kohn, Renate | Renate Kohn | Actor | 1972 | 1 | |
| König, Brigitte | Brigitte König | Actor | 1972 - 2013 | 2 | |
| Kraft, Jürgen | Jürgen Kraft | Actor | 1972 | 1 | |
| Koktová, Vĕra | Vĕra Koktová | Actor | 1972 - 1994 | 6 | |
| Kesting, Christian | Christian Kesting | Actor | 1905 - 1911 | 3 | |
| Kreuzwieser, Hermann | Hermann Kreuzwieser | Actor | 1911 | 1 | |
| Knöfler, Fritz | Fritz Knöfler | Actor | 1905 - 1911 | 3 | |
| Kirchner, Otto | Otto Kirchner | Director | 1929 | 1 | |
| Kayser, Rosarito | Rosarito Kayser | Actor | 1930 | 1 | |
| Kayser, Manuel | Manuel Kayser | Actor | 1930 | 1 | |
| Keppler, Brigitte | Brigitte Keppler | Actor | 1947 | 1 | |
| Krügel, Gisela | Gisela Krügel | Actor | 1947 | 1 | |
| Katselis, Pelos | Pelos Katselis | Actor, Director, Translator | 1930 - 1994 | 8 | |
| Kühne, Maria | Maria Kühne | Actor | 1947 | 1 | |
| Keating, Ruth | Ruth Keating | Costume Designer, Designer | 1932 - 1939 | 4 | |
| Kubik, Karl-Heinz | Karl-Heinz Kubik | Director | 1972 | 1 | |
| Katzer, Manfred | Manfred Katzer | Actor | 1972 | 1 | |
| Kammerer, Marcella | Marcella Kammerer | Actor | 1951 - 1952 | 2 | |
| Kleinová, V. | V. Kleinová | Actor | 1940 | 1 | |
| Konečný, K. | K. Konečný | Actor | 1939 - 1940 | 2 | |
| Kupke, Peter | Peter Kupke | Director | 1983 - 1997 | 6 | |
| Koun, Karolos | Karolos Koun | Actor, Costume Designer, Designer, Director | 1939 - 1956 | 73 | |
| Kouritis, Ilias | Ilias Kouritis | Actor | 1942 - 1954 | 6 | |
| Klonis, Kleovoulos | Kleovoulos Klonis | Designer | 1933 - 1965 | 16 | |
| Kurel, Rudolf | Rudolf Kurel | Mask Maker | 1972 | 1 | |
| Křiváček, Ladislav | Ladislav Křiváček | Actor | 1972 | 2 | |
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