| Kelln, Mya | Mya Kelln | Director, Sound Designer | 2023 - 2024 | 3 | |
| Komisarjevsky, Theodore | Theodore Komisarjevsky | Director, Producer | 1921 - 1924 | 4 | 1 |
| Kripalani, Pushan | Pushan Kripalani | Director, Musical Director | 2016 - 2017 | 6 | |
| Kuzmanich, Roberto | Roberto Kuzmanich | Director, Lighting Designer, Sound Designer | 2006 | 3 | |
| Keegan, Hugh | Hugh Keegan | Director, Lighting Designer | 1974 - 2008 | 2 | |
| Kooshk Jalali, Alireza | Alireza Kooshk Jalali | Director, Dramaturg, Translator | 2010 | 3 | |
| Kuck, Gerd Leo | Gerd Leo Kuck | Director, Dramaturg | 1972 - 1996 | 4 | |
| Kissel, Hiltrud | Hiltrud Kissel | Director, Dramaturg | 1995 - 1996 | 3 | |
| Kawaji, Hiroshi | Hiroshi Kawaji | Director | 1976 - 1977 | 3 | |
| Kjærulff-Schmidt, Palle | Palle Kjærulff-Schmidt | Director | 1974 - 2000 | 2 | 1 |
| Kato, Masaharu | Masaharu Kato | Director | 1993 | 1 | |
| Kessler, Alfred S | Alfred S Kessler | Director | 1976 | 1 | |
| Kahn, Michael | Michael Kahn | Director | 1979 - 2001 | 4 | 1 |
| Kaissar, Ken | Ken Kaissar | Director | 2006 | 1 | |
| Kaizik, Jürgen | Jürgen Kaizik | Director | 1991 | 1 | |
| Kalima, Eino | Eino Kalima | Director | 1935 - 1952 | 3 | |
| Kališová, Jana | Jana Kališová | Director | 1999 | 1 | |
| Kalmet, Leo | Leo Kalmet | Director | 1943 | 2 | |
| Kavanaugh, Rachel | Rachel Kavanaugh | Director | 2004 | 7 | 1 |
| Kelling, Edgar | Edgar Kelling | Director | 1971 | 1 | |
| Kemppi, Raiku | Raiku Kemppi | Director | 1980 | 1 | |
| Khalifa, Ali | Ali Khalifa | Director | 2006 | 1 | 1 |
| Kindermann, Uta | Uta Kindermann | Director | 2005 | 4 | |
| Kingsford-Brown, Jeff | Jeff Kingsford-Brown | Director | 2004 | 1 | |
| Klette, Michael | Michael Klette | Director | 1999 - 2015 | 2 | |
| Knaus, Walter | Walter Knaus | Director | 1956 - 1965 | 2 | 1 |
| Koczanowicz, Zbigniew | Zbigniew Koczanowicz | Director | 1960 | 1 | |
| Koerber, Edith | Edith Koerber | Director | 2005 - 2006 | 3 | |
| Kornmüller, Jacqueline | Jacqueline Kornmüller | Director | 1999 - 2005 | 3 | 1 |
| Kreidl, Heinz | Heinz Kreidl | Director | 1977 - 2003 | 6 | 1 |
| Krempel, Wolfram | Wolfram Krempel | Director | 1998 | 1 | |
| Krogh, Morten | Morten Krogh | Director | 2001 - 2006 | 3 | 1 |
| Krüger, Gert | Gert Krüger | Director | 2008 | 1 | |
| Kruse, Jürgen | Jürgen Kruse | Director | 1986 - 1993 | 2 | 1 |
| Kirke, Francis T. | Francis T. Kirke | Director | 2007 | 8 | |
| Kareman, Pamela Moller | Pamela Moller Kareman | Director | 2006 | 2 | 1 |
| Kayser, Karl Georg | Karl Georg Kayser | Director | 1997 - 1999 | 2 | 1 |
| Korsan, Noemi | Noemi Korsan | Director | 1965 | 1 | |
| Kasuya, Toshiyuki | Toshiyuki Kasuya | Director | 1948 | 1 | |
| Kato, Nagaharu | Nagaharu Kato | Director | 1931 - 1937 | 2 | |
| Kramer, Tim | Tim Kramer | Director | 2002 - 2018 | 2 | |
| Krasnânskij, Èmmanuil | Èmmanuil Krasnânskij (Эммануил Краснянский) | Director | 1938 | 1 | |
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