| Konwitschny, Peter | Peter Konwitschny | Director | 2017 | 1 | |
| Kopf, Markus | Markus Kopf | Director | 2017 - 2018 | 5 | |
| Kerge, Ago-Endrik | Ago-Endrik Kerge | Director | 1978 | 1 | |
| Kreitmeier, Manuel | Manuel Kreitmeier | Director | 2017 | 1 | |
| Kleinert, Andreas | Andreas Kleinert | Director | 2016 | 1 | |
| Kasetani, Shinnichi | Shinnichi Kasetani | Director | 1984 | 1 | |
| Kapusta, Thomas | Thomas Kapusta | Director | 2013 | 1 | |
| Kaku, Eiji | Eiji Kaku | Director | 1993 | 1 | |
| Korad, Asuman | Asuman Korad | Director | 1971 | 1 | |
| Kattwinkel, Susan | Susan Kattwinkel | Director | 2018 | 1 | |
| Khek, Pavel | Pavel Khek | Director | 2018 | 1 | |
| Klaus, Claudia | Claudia Klaus | Director | 2018 | 2 | |
| Kirsch, Richard | Richard Kirsch | Director | 1904 | 1 | |
| Kerkhof, Ingo | Ingo Kerkhof | Director | 2015 | 1 | |
| Kogan, Arthur | Arthur Kogan | Director | 2016 | 1 | |
| Kestler, Richard | Richard Kestler | Director | 1896 | 1 | |
| Krčar, Ksenija | Ksenija Krčar | Director | 2015 | 1 | |
| Konstantinović, Ana | Ana Konstantinović | Director | 2016 | 1 | |
| Konjović, Jovan | Jovan Konjović | Director | 1955 | 1 | |
| Ksenija Krnajski | Krnajski, Ksenija | Director | 2006 | 1 | |
| Kauzlarić, Vesna | Vesna Kauzlarić | Director | 1956 | 1 | |
| Karim, Adel | Adel Karim | Director | 2005 | 1 | |
| Khalil, Ismail | Ismail Khalil | Director | 1975 | 1 | |
| Kingston, Peter | Peter Kingston | Director | 1996 | 1 | |
| Korabel'nik, M. | M. Korabel'nik | Director | 1954 | 1 | |
| Kodokolovič, Boris | Boris Kodokolovič | Director | 1957 | 1 | |
| Korotkevič, V. | V. Korotkevič | Director | 1970 | 1 | |
| Konstantonov, Georgij, Viktorovič | Georgij Viktorovič Konstantonov | Director | 1974 | 1 | |
| Kopylov, Ju. | Ju. Kopylov | Director | 1990 | 1 | |
| Karimi, Tahoora | Tahoora Karimi | Director | 2018 | 1 | |
| Kreisler, Otto | Otto Kreisler | Director | 1918 | 1 | |
| Kumaran, K.P. | K.P. Kumaran | Director | 2008 | 1 | |
| Knight, Castleton | Castleton Knight | Director | 1929 | 1 | |
| Kurchevskiy, Vadim | Vadim Kurchevskiy | Director | 1979 | 1 | |
| Kelleher, Jacob | Jacob Kelleher | Director | 2022 | 1 | |
| Kilmurry, Mark | Mark Kilmurry | Director | 2022 | 1 | |
| Kara, Seleb | Seleb Kara | Director | 2023 | 1 | |
| Kraemer, Gabriela | Gabriela Kraemer | Director | 2023 | 1 | |
| Kelln, Mya | Mya Kelln | Director | 2023 - 2024 | 2 | |
| Kulyabin, Timofey Aleksandrovich | Timofey Aleksandrovich Kulyabin (Тимофей Александрович Кулябин) | Director | 2012 - 2025 | 3 | |
| Kirwan, Ryan | Ryan Kirwan | Director | 2022 | 1 | |
| Kalaitzi, Glykeria | Glykeria Kalaitzi | Director | 2023 | 1 | |
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