| Kay, Victoria | Victoria Kay | Actor | 2025 | 1 | |
| Kenderes, Jill | Jill Kenderes | Costume Designer | 2025 | 1 | |
| Kralli, Aspasia | Aspasia Kralli (Ασπασία Κράλλη) | Actor | 2025 | 1 | |
| Kalabokis, Michalis | Michalis Kalabokis (Μιχάλης Καλαμπόκης) | Actor | 2025 | 1 | |
| Kjær, Albert | Albert Kjær | Actor | 1899 | 1 | |
| Kulik, Todd. R. | Todd. R. Kulik | Stage Manager | 2025 | 1 | |
| Kelleher, Kenneth | Kenneth Kelleher | Director | 2025 | 1 | |
| Karbowski, Iliana | Iliana Karbowski | Stage Manager | 2025 | 1 | |
| Kasimow, Johanna | Johanna Kasimow | Director | 2025 | 1 | |
| Kolalas, Athanasios | Athanasios Kolalas (Aθανάσιος Κολαλάς) | Set Designer | 2025 | 1 | |
| Koutsikopoulou, Areti | Areti Koutsikopoulou (Αρετή Κουτσικοπούλου) | Producer | 2025 | 1 | |
| Kǎrdžilova, Radina | Radina Kǎrdžilova (Радина Кърджилова) | Actor | 2025 | 1 | |
| Kirkby, Charlotte | Charlotte Kirkby | Actor | 2025 | 1 | |
| Kennedy, Will | Will Kennedy | Actor | 2025 | 1 | |
| Kummelstedt, Anna | Anna Kummelstedt | Actor | 2025 | 1 | |
| Kern, Christa | Christa Kern | Director | 2024 | 1 | |
| Ki-ho, Lee | Lee Ki-ho (이기호) | Director | | 1 | |
| Khan, Imran | Imran Khan | Actor | 2024 | 1 | |
| Khan, Harris | Harris Khan | Actor | 2024 | 1 | |
| Koh, Timothy | Timothy Koh | Director | 2025 | 1 | |
| Kukathas, Jo | Jo Kukathas | Actor | 2025 | 1 | |
| Kay Siu, Lim | Lim Kay Siu | Actor | 2025 | 1 | |
| Kim, Kahyun | Kahyun Kim | 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 | |
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