| Kim, Jeremy | Jeremy Kim () | Actor | 2025 | 1 | |
| Kowalski, Moira | Moira Kowalski () | Stage Manager | 2025 | 1 | |
| Kelly, Amanda | Amanda Kelly () | Actor | 2025 | 1 | |
| Kindy, Michelle | Michelle Kindy () | Producer | 2025 | 1 | |
| Kiseleva, Maria | Maria Kiseleva (Мария Киселева) | Actor | 2025 | 1 | |
| Kirsten, Stefanie | Stefanie Kirsten | Actor | 1990 - 2008 | 2 | |
| Kjærulff-Schmidt, Palle | Palle Kjærulff-Schmidt | Director | 1974 - 2000 | 2 | 1 |
| Krogh, Malene | Malene Krogh | Actor | 1974 - 2000 | 2 | |
| Kępińska, Elżbieta | Elżbieta Kępińska | Actor | 1962 - 1975 | 2 | |
| Kellner, Berthold | Berthold Kellner | Actor, Director | 1997 - 2001 | 2 | |
| Kucharesin, Valerij | Valerij Kucharesin | Actor | 2003 - 2006 | 2 | 1 |
| Kovanko, Lilga | Lilga Kovanko | Actor | 1977 - 1978 | 2 | 1 |
| Kern, András | András Kern | Actor | 1989 | 2 | |
| Kiss, Jenő | Jenő Kiss | Actor | 1989 | 2 | |
| Kuhnhold, Sabrina | Sabrina Kuhnhold | Actor | 1999 - 2000 | 2 | |
| Kemp-Welch, Joan | Joan Kemp-Welch | Actor, Director | 1939 - 1970 | 2 | |
| Kahl, Gisela | Gisela Kahl | Dramaturg | 1990 - 1992 | 2 | |
| Kaitue, Katariina | Katariina Kaitue | Actor | 2002 - 2007 | 2 | 1 |
| Kalina, Jiří | Jiří Kalina | Actor | 1968 - 1971 | 2 | |
| Kaljola, Johannes | Johannes Kaljola | Actor | 1943 | 2 | |
| Kalmet, Leo | Leo Kalmet | Director | 1943 | 2 | |
| Kane, Patricia | Patricia Kane | Actor, Choreographer | 1953 | 2 | |
| Kaneko, Hiroshi | Hiroshi Kaneko | Adaptation, Director | 1977 | 2 | |
| Kansallisteatteri, Suomen | Suomen Kansallisteatteri | Costume Designer | 1972 - 1973 | 2 | |
| Karczewski, Zdzisław | Zdzisław Karczewski | Actor, Director | 1954 | 2 | |
| Karoliussen, Håkon | Håkon Karoliussen | Actor | 1998 - 2006 | 2 | 1 |
| Kárpáthy, Zoltán | Zoltán Kárpáthy | Actor, Choreographer | 1960 - 1965 | 2 | |
| Karst, Ronald | Ronald Karst | Actor | 1968 | 2 | |
| Kaspar, Jaroslav | Jaroslav Kaspar | Actor | 1957 - 1978 | 2 | |
| Katajisto, Martti | Martti Katajisto | Actor | 1972 - 1973 | 2 | |
| Kates, Bernard | Bernard Kates | Actor | 1915 - 1981 | 2 | |
| Kennedy, Sinead | Sinead Kennedy | Actor | 2006 - 2010 | 2 | |
| Kerr, Philip | Philip Kerr | Actor | 1973 - 1998 | 2 | |
| Kersten, Renate | Renate Kersten | Dramaturg | 1988 - 1993 | 2 | |
| Kessler, Michael | Michael Kessler | Actor | 1993 - 1996 | 2 | |
| Kessler, Othmar | Othmar Kessler | Actor | 1966 - 1982 | 2 | |
| Khanh, Lê | Lê Khanh | Actor | 2006 - 2010 | 2 | |
| Kihlström, Kari | Kari Kihlström | Actor | 1996 - 1999 | 2 | 1 |
| Kilchenmann, Lilette | Lilette Kilchenmann | Actor | 1944 - 1950 | 2 | |
| Kimbrough, Charles | Charles Kimbrough | Actor | 1967 - 1971 | 2 | |
| Kind, Günter | Günter Kind | Actor | 1962 - 1972 | 2 | |
| Kinnunen, Heikki | Heikki Kinnunen | Actor | 1987 - 2002 | 2 | 2 |
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