| 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 | |
| Kramer, Joel | Joel Kramer | Actor | 1965 - 1966 | 3 | |
| Kasch, Günter | Günter Kasch | Actor | 1965 - 1967 | 4 | |
| Knotek, Ivo | Ivo Knotek | Actor | 1965 - 1968 | 2 | |
| Kalanke, Renate | Renate Kalanke | Costume Designer | 1965 - 1974 | 2 | |
| Kubíček, František | František Kubíček | Actor | 1965 - 1978 | 2 | |
| Kourkoulos, Nikos | Nikos Kourkoulos | Actor | 1965 - 1979 | 3 | |
| Krinzinger, Tom | Tom Krinzinger | Actor | 1965 - 1981 | 2 | |
| Kyriakidis, Giannis | Giannis Kyriakidis | Actor | 1965 - 1984 | 4 | |
| Křenek, Emanuel | Emanuel Křenek | Actor | 1965 - 1988 | 2 | |
| Kropp, Günther | Günther Kropp | Actor | 1965 - 1989 | 2 | |
| Kovacs, Lajos | Lajos Kovacs | Actor, Choreographer | 1965 - 1993 | 2 | |
| Král, Jaroslav | Jaroslav Král | Adaptation, Dramaturg | 1965 - 1993 | 3 | |
| Kastanas, Kostas | Kostas Kastanas | Actor | 1965 - 1995 | 6 | |
| Kőmíves, Mihály | Mihály Kőmíves | Actor | 1965 - 1996 | 3 | |
| Kézdy, György | György Kézdy | Actor | 1965 - 1999 | 7 | 1 |
| Kramm, Ilse | Ilse Kramm | Actor | 1965 - 2006 | 35 | 1 |
| Kainz, Walter | Walter Kainz | Actor | 1966 | 1 | |
| Kappler, Karl | Karl Kappler | Designer | 1966 | 1 | |
| Kern, Sabine | Sabine Kern | Actor | 1966 | 1 | |
| Kunad, Rainer | Rainer Kunad | Composer | 1966 | 1 | |
| Klevins, Judy L. | Judy L. Klevins | Actor | 1966 | 1 | |
| Knight, Albert | Albert Knight | Actor | 1966 | 1 | |
| Klaer, Richard | Richard Klaer | Actor | 1966 | 1 | |
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