| Krogh, Oscar | Oscar Krogh | Actor | 1911 | 1 | 1 |
| Klouman, Thoralf | Thoralf Klouman | Actor | 1911 - 1931 | 13 | 1 |
| Kelly, Renee | Renee Kelly | Actor | 1911 | 1 | 1 |
| Kruger, Alma | Alma Kruger | Actor | 1900 - 1929 | 5 | 1 |
| Koren-Wiberg, Mary | Mary Koren-Wiberg | Actor | 1917 - 1961 | 18 | 1 |
| Kirksæther, Aase | Aase Kirksæther | Actor | 1919 | 1 | 1 |
| Komisarjevsky, Theodore | Theodore Komisarjevsky | Director, Producer | 1921 - 1924 | 4 | 1 |
| Krogsrud, Sverre | Sverre Krogsrud | Actor | 1924 - 1961 | 8 | 1 |
| Kihle, Mimi | Mimi Kihle | Actor | 1927 - 1929 | 43 | 1 |
| Kleve, Arne | Arne Kleve | Actor | 1927 - 1928 | 67 | 1 |
| Kavanaugh, Richard | Richard Kavanaugh | Actor | 1975 - 1983 | 3 | 1 |
| Klett, Renate | Renate Klett | Director | 1973 | 1 | 1 |
| Kállai, Ferenc | Ferenc Kállai | Actor | 1974 - 1991 | 3 | 1 |
| Krawczykowski, Zbigniew | Zbigniew Krawczykowski | Translator | 1963 - 2007 | 14 | 1 |
| Kolstad, Kirsti | Kirsti Kolstad | Actor | 1971 - 1973 | 45 | 1 |
| Karge, Manfred | Manfred Karge | Actor, Adaptation, Director | 1973 - 1994 | 5 | 1 |
| Kimmestad, Elna | Elna Kimmestad | Actor | 1947 - 1980 | 12 | 1 |
| Koolschijn, Hugo | Hugo Koolschijn | Actor | 1973 - 2003 | 39 | 1 |
| Karlsson, Jon | Jon Karlsson | Actor | 2006 | 2 | 1 |
| Klinga, Elin | Elin Klinga | Actor | 2006 | 2 | 1 |
| Keresztes, Tamás | Tamás Keresztes | Actor | 2007 - 2019 | 9 | 1 |
| Kovács, Angela | Angela Kovács | Actor | 1991 - 2013 | 28 | 1 |
| Kammer, Friederike | Friederike Kammer | Actor | 2003 - 2007 | 6 | 1 |
| Kröger, Ruth Marie | Ruth Marie Kröger | Actor | 2000 - 2007 | 7 | 1 |
| Kitzl, Albert | Albert Kitzl | Actor | 1966 - 2008 | 13 | 1 |
| Kahiluoto, Atro | Atro Kahiluoto | Adaptation, Director | 1995 - 2008 | 6 | 1 |
| Kellogg, Marjorie Bradley | Marjorie Bradley Kellogg | Designer | 1981 - 1990 | 2 | 1 |
| Kleijn, Tom | Tom Kleijn | Translator | 1992 - 2008 | 21 | 1 |
| Kirchhoff, Corinna | Corinna Kirchhoff | Actor | 1993 - 2013 | 5 | 1 |
| Kogge, Imogen | Imogen Kogge | Actor | 1993 - 2006 | 5 | 1 |
| Krause, Elisabeth | Elisabeth Krause | Actor | 1977 | 1 | 1 |
| Keller, Inge | Inge Keller | Actor | 1975 - 1989 | 5 | 1 |
| Koch, Uwe-Karsten | Uwe-Karsten Koch | Actor | 1968 - 1974 | 3 | 1 |
| Króliński, Kazimierz | Kazimierz Króliński | Translator | 1913 | 1 | 1 |
| Kjellson, Ingvar | Ingvar Kjellson | Actor | 1950 - 2004 | 14 | 1 |
| Kallergis, Lykourgos | Lykourgos Kallergis | Actor, Director | 1939 - 1990 | 38 | 1 |
| Kozlik, Al | Al Kozlik | Actor | 1979 | 1 | 1 |
| Köhler, Heinz-Dieter | Heinz-Dieter Köhler | Adaptation, Director | 1972 | 2 | 1 |
| Kramer, Katrin | Katrin Kramer | Dramaturg | 2013 - 2014 | 3 | 1 |
| Koch, Heinrich | Heinrich Koch | Adaptation, Director, Dramaturg, Translator | 1952 - 1978 | 17 | 1 |
| Kjelsberg, Johan | Johan Kjelsberg | Actor | 1953 - 1981 | 14 | 1 |
| Kückelmann, Gertrud | Gertrud Kückelmann | Actor | 1971 - 1976 | 4 | 1 |
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