| Kreismann, Kersti | Kersti Kreismann | Actor | 1978 - 2010 | 6 | 1 |
| Knutsen, Arne | Arne Knutsen | Actor | 1978 - 2006 | 6 | |
| Kodama, Taiji | Taiji Kodama | Actor | 1978 - 2003 | 6 | |
| Kyriakaki-Loukissa, Olympia | Olympia Kyriakaki-Loukissa | Musical Director | 1978 - 2002 | 2 | |
| Kløvig, Eyolf Soot | Eyolf Soot Kløvig | Actor | 1978 - 2000 | 14 | 1 |
| Keller, Astrid | Astrid Keller | Actor | 1978 - 1998 | 3 | |
| Kjellsby, Jorunn | Jorunn Kjellsby | Actor | 1978 - 1995 | 3 | 1 |
| Kawamori, Shigeo | Shigeo Kawamori | Costume Designer | 1978 - 1995 | 5 | |
| Konečný, Emil | Emil Konečný | Actor | 1978 - 1993 | 2 | |
| Kun, Tibor | Tibor Kun | Actor | 1978 - 1991 | 2 | |
| Karydis, Giannis | Giannis Karydis | Costume Designer, Designer | 1978 - 1990 | 8 | |
| Kamm, Volkmar | Volkmar Kamm | Adaptation, Director | 1978 - 1989 | 5 | |
| Kotamanidou, Eva | Eva Kotamanidou | Actor | 1978 - 1989 | 4 | |
| Klenskaja, Maria | Maria Klenskaja | Actor | 1978 - 1989 | 3 | |
| Karppinen, Salme | Salme Karppinen | Actor | 1978 - 1984 | 3 | |
| Karnil, Eddie | Eddie Karnil | Actor | 1978 - 1984 | 3 | |
| Korterink, Thea | Thea Korterink | Actor | 1978 - 1982 | 2 | |
| Kollman, Isabella | Isabella Kollman | Actor | 1978 - 1980 | 3 | |
| Kakiuchi, Norio | Norio Kakiuchi | Designer | 1978 - 1980 | 4 | |
| Kawatsu, Saeko | Saeko Kawatsu | Actor | 1978 - 1980 | 2 | |
| Kjær-Petersen, Viggo | Viggo Kjær-Petersen | Translator | 1978 - 1980 | 2 | |
| Kochańczyk, Marcel | Marcel Kochańczyk | Designer, Director | 1978 - 1979 | 4 | |
| Kent, Brian | Brian Kent | Actor | 1978 - 1979 | 2 | |
| Kamiyama, Hiroshi | Hiroshi Kamiyama | Actor | 1978 | 1 | |
| Kaufmann, Petra | Petra Kaufmann | Actor | 1978 | 1 | |
| Kawakami, Natsuyo | Natsuyo Kawakami | Actor | 1978 | 2 | |
| Kijowska, Elżbieta | Elżbieta Kijowska | Actor | 1978 | 1 | |
| Kalinowski, Wojciech | Wojciech Kalinowski | Actor | 1978 | 1 | |
| Kiersznowski, Krzysztof | Krzysztof Kiersznowski | Actor | 1978 | 1 | |
| Kamińska-Nowakowska, Teresa | Teresa Kamińska-Nowakowska | Actor | 1978 | 1 | |
| Kiskiinen, Tero | Tero Kiskiinen | Designer | 1978 | 1 | |
| Kayser, Frode | Frode Kayser | Actor | 1978 | 1 | |
| Keurdorst, Derek | Derek Keurdorst | Actor | 1978 | 1 | |
| Karels, Brent | Brent Karels | Actor | 1978 | 1 | |
| Kaiser, Johannes | Johannes Kaiser | Actor | 1978 | 1 | |
| Kuderna, Peter | Peter Kuderna | Actor | 1978 | 1 | |
| Kalnarāja, Ināra | Ināra Kalnarāja | Actor | 1978 | 1 | |
| Kershaw, Annabel | Annabel Kershaw | Actor | 1978 | 1 | |
| Kokkinen, Anna-Maija | Anna-Maija Kokkinen | Actor | 1978 | 1 | |
| Kastro, Kaiti | Kaiti Kastro | Translator | 1978 | 3 | |
| Klosowski, Andreas | Andreas Klosowski | Designer | 1978 | 1 | |
| Kilden, Elaine | Elaine Kilden | Actor | 1978 | 1 | |
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