| Katsadramis, Thodoros | Thodoros Katsadramis | Actor | 1956 | 2 | |
| Katsafados, Thodoros | Thodoros Katsafados | Actor | 1985 - 1989 | 11 | |
| Katsaris, Antonis | Antonis Katsaris | Actor | 1986 | 1 | |
| Katseli-Mazaraki, Aleka | Aleka Katseli-Mazaraki | Actor | 1943 - 1985 | 7 | |
| Katselis, Pelos | Pelos Katselis | Actor, Director, Translator | 1930 - 1994 | 8 | |
| Katsiadaki, Maria | Maria Katsiadaki | Actor | 1994 | 1 | |
| Katsika, Vicky | Vicky Katsika (Βίκυ Κατσίκα) | Actor | 2022 | 1 | |
| Katsika, Viky | Viky Katsika | Actor | 2020 | 1 | |
| Katsikis, Panagiotis | Panagiotis Katsikis | Actor | 2010 | 1 | |
| Katsimichas, Giannis | Giannis Katsimichas | Actor | 1989 - 2024 | 2 | |
| Katsioula, Elina | Elina Katsioula | Designer | 1985 | 1 | |
| Katsukura, Keiko | Keiko Katsukura | Actor | 1984 | 1 | |
| Katsumura, Masanobu | Masanobu Katsumura | Actor | 2009 | 1 | |
| Katsura, Hisako | Hisako Katsura | Actor | 1918 | 1 | |
| Katsushiba, Jiro | Jiro Katsushiba | Lighting Designer | 2018 | 2 | |
| Katt, Carmen | Carmen Katt | Actor | 1999 | 1 | |
| Kattenbelt, Chiel | Chiel Kattenbelt | Actor | 1997 | 1 | |
| Kattimani, Hulugappa | Hulugappa Kattimani | Actor | 1995 | 3 | |
| Kättner, Christine | Christine Kättner | Actor | 1999 | 2 | |
| Kattwinkel, Susan | Susan Kattwinkel | Director | 2018 | 1 | |
| Katušić Balen, Anka | Anka Katušić Balen | Translator | 2005 - 2006 | 2 | |
| Katušić-Balen, Ankica | Ankica Katušić-Balen | Translator | 1990 | 1 | |
| Katyal, Anjum | Anjum Katyal | Dramaturg | 2009 | 1 | |
| Katz, Alex | Alex Katz | Designer | 1968 | 1 | |
| Katz, Bernice | Bernice Katz | Actor | 1951 - 1952 | 2 | |
| Katz, Joachim | Joachim Katz | Actor | 1999 | 1 | |
| Katz, Leon | Leon Katz | Adaptation, Dramaturg, Translator | 1983 | 3 | 1 |
| Katz, Lorley | Lorley Katz | Actor | 1954 | 1 | |
| Katz, Natasha | Natasha Katz | Lighting Designer | 1992 - 2009 | 2 | |
| Katz, Sammi | Sammi Katz | Actor | 2016 | 1 | |
| Katz, Zulema | Zulema Katz | Actor | 1964 | 1 | |
| Katzer, Dorothea | Dorothea Katzer | Costume Designer | 1993 - 2005 | 3 | |
| Katzer, Maja | Maja Katzer | Actor | 1975 | 1 | |
| Katzer, Manfred | Manfred Katzer | Actor | 1972 | 1 | |
| Katzin, Bernard | Bernard Katzin | Actor | 1934 | 1 | |
| Katzin, Richard | Richard Katzin | Actor | 1942 | 2 | |
| Katzorke, Emil | Emil Katzorke | Actor | 1893 - 1894 | 2 | |
| Katzschmann, Christian | Christian Katzschmann | Dramaturg | 2010 - 2022 | 8 | |
| Kaub, Paula | Paula Kaub | Actor | 1937 | 1 | |
| Kaucká, Juliana | Juliana Kaucká | Actor | 1908 | 1 | |
| Kauer, Franz | Franz Kauer | Actor, Director | 1908 - 1915 | 13 | |
| Kauffman, Robert | Robert Kauffman | Actor | 1968 | 1 | |
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