| Klopsch, Kurt | Kurt Klopsch | Director | 1945 | 1 | |
| Klos, Dieter | Dieter Klos | Choreographer | 1981 | 1 | |
| Klose, Marte | Marte Klose | Actor | 1956 | 1 | |
| Klose, Paul | Paul Klose | Actor | 1898 | 3 | |
| Kloska, Joseph | Joseph Kloska | Actor | 2006 | 1 | |
| Klosowski, Andreas | Andreas Klosowski | Designer | 1978 | 1 | |
| Kloss, Heinz | Heinz Kloss | Actor | 1999 | 1 | |
| Klossowski, Erich | Erich Klossowski | Costume Designer, Designer | 1915 | 2 | |
| Kloster, Matthew | Matthew Kloster | Actor | 2004 | 1 | 1 |
| Kloster, Ragna | Ragna Kloster | Actor, Choreographer, Dancer | 1928 | 3 | |
| Klostermann, Elisabeth | Elisabeth Klostermann | Actor | 1921 | 1 | |
| Klostermeier, Anneli | Anneli Klostermeier | Dramaturg | 2002 | 1 | |
| Klotsche, Martina | Martina Klotsche | Actor | 1981 | 1 | |
| Klotsotiras, Vasilis | Vasilis Klotsotiras (Βασίλης Κλωτσοτήρας) | Lighting Designer | 2023 | 1 | |
| Klott, Julius | Julius Klott | Actor | 1901 | 1 | |
| Klotz, Adolf | Adolf Klotz | Actor | 1916 | 1 | |
| Klotz, Florence | Florence Klotz | Costume Designer | 1982 | 1 | |
| Klotz, Hilde | Hilde Klotz | Actor | 1956 | 1 | |
| Klotz, Klara | Klara Klotz | Actor | 1954 | 1 | |
| Klotz, Mr. | Mr. Klotz | Actor | 1886 - 1889 | 2 | |
| Klötzke, Ernst, August | Ernst August Klötzke | Musical Director, Musician | 2008 | 2 | 1 |
| Kloukinas, Michalis | Michalis Kloukinas | Designer | 2020 | 1 | |
| Klouman, Borghild | Borghild Klouman | Actor | 1928 - 1931 | 9 | |
| Klouman, Karin | Karin Klouman | Actor | 2011 | 1 | |
| Klouman, Thoralf | Thoralf Klouman | Actor | 1911 - 1931 | 13 | 1 |
| Klouman, Wenche | Wenche Klouman | Actor | 1942 | 1 | |
| Klovholt, Anne Regine | Anne Regine Klovholt | Adaptation, Designer, Director | 2004 - 2005 | 15 | 1 |
| Kløvig, Eyolf Soot | Eyolf Soot Kløvig | Actor | 1978 - 2000 | 14 | 1 |
| Kløvstad, Einar | Einar Kløvstad | Actor | 1994 | 1 | |
| Kløvtvedt, Kaare | Kaare Kløvtvedt | Actor | 1962 - 1963 | 58 | |
| Klubal, Anton | Anton Klubal | Actor | 1940 | 1 | |
| Klubertanz, Carl Heinz | Carl Heinz Klubertanz | Actor, Director | 1937 - 1938 | 8 | |
| Klubowicz, Marta | Marta Klubowicz | Actor | 2002 | 2 | |
| Klučka, Radovan | Radovan Klučka | Actor | 2010 - 2011 | 15 | 1 |
| Klucke, Einhard | Einhard Klucke | Actor | 2004 | 1 | |
| Kluften, Tonny | Tonny Kluften | Composer | 2001 | 1 | |
| Klug, Lili | Lili Klug | Actor | 1897 | 1 | |
| Klug, Ms. | Ms. Klug | Actor | 1895 | 1 | |
| Kluga, Raymond M. | Raymond M. Kluga | Costume Designer | 1981 | 1 | |
| Kluge, Erna | Erna Kluge | Actor | 1922 | 1 | |
| Kluge, Jakob | Jakob Kluge | Sound Designer | 2021 | 1 | |
| Kluger, Daniel | Daniel Kluger | Composer, Sound Designer | 2016 - 2021 | 4 | |
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