| Kleinknecht, Tonio | Tonio Kleinknecht | Director | 2014 - 2024 | 2 | |
| Kleinke, Dirk | Dirk Kleinke | Actor | 2014 | 2 | |
| Kleinhönig, Karl | Karl Kleinhönig | Actor | 1932 | 1 | |
| Kleinheinz, Johann | Johann Kleinheinz | Lighting Designer | 2008 | 1 | |
| Kleinheinz, Alfred | Alfred Kleinheinz | Actor | 1993 - 1995 | 11 | |
| Kleinhans, Marie | Marie Kleinhans | Actor | 1912 | 1 | |
| Kleinert, Tom | Tom Kleinert | Costume Designer | 2011 | 1 | |
| Kleinert, Stefan | Stefan Kleinert | Director | 2017 | 1 | |
| Kleinert, S. | S. Kleinert | Actor | 1997 | 1 | |
| Kleinert, Robert | Robert Kleinert | Actor | 1916 - 1955 | 8 | |
| Kleinert, Matthias | Matthias Kleinert | Actor, Choreographer | 2007 - 2015 | 6 | 1 |
| Kleinert, Kerstin | Kerstin Kleinert | Actor | 1994 | 1 | |
| Kleinert, Franziska | Franziska Kleinert | Actor | 1994 | 1 | |
| Kleinert, Christian | Christian Kleinert | Actor | 2004 - 2006 | 2 | |
| Kleinert, Andreas | Andreas Kleinert | Director | 2016 | 1 | |
| Kleinermann, Charly | Charly Kleinermann | Designer, Set Designer | 2021 - 2023 | 2 | |
| Kleiner, Peter | Peter Kleiner | Actor | 1993 | 1 | |
| Kleiner, Oskar | Oskar Kleiner | Actor | 1915 | 1 | |
| Kleinecke, Georg | Georg Kleinecke | Actor | 1878 - 1899 | 3 | |
| Kleine, Sven | Sven Kleine | Dramaturg | 2008 - 2013 | 2 | |
| Kleine, Olly | Olly Kleine | Actor | 1910 | 1 | |
| Kleinbach, Henry | Henry Kleinbach | Actor | 1932 | 2 | |
| Klein, Willy | Willy Klein | Actor, Director | 1906 - 1923 | 3 | |
| Klein, Timo | Timo Klein | Actor | 2011 | 8 | |
| Klein, Till | Till Klein | Actor | 2014 | 1 | |
| Klein, Tanya | Tanya Klein | Director | 1998 - 2002 | 2 | |
| Klein, Suzanne | Suzanne Klein | Costume Designer | 2008 | 1 | |
| Klein, Steven M. | Steven M. Klein | Sound Designer | 1992 | 1 | |
| Klein, Roland | Roland Klein | Actor | 1993 | 1 | |
| Klein, Ralph | Ralph Klein | Director | 1973 | 1 | |
| Klein, Pia | Pia Klein | Actor | 1917 | 1 | |
| Klein, Peter | Peter Klein | Actor | 1967 | 1 | |
| Klein, Otto | Otto Klein | Actor | 1933 | 1 | |
| Klein, Otmar | Otmar Klein | Musician | 1994 | 1 | |
| Klein, Nita | Nita Klein | Actor | 1989 | 1 | |
| Klein, Nicole | Nicole Klein | Actor | 2010 | 1 | 1 |
| Klein, Mr. | Mr. Klein | Actor | 1878 - 1898 | 4 | |
| Klein, Manuel | Manuel Klein | Actor | 2015 - 2017 | 28 | |
| Klein, Magdalena | Magdalena Klein | Director | 1978 | 1 | |
| Klein, Lotte | Lotte Klein | Actor | 1911 - 1953 | 4 | |
| Klein, Lone | Lone Klein | Director | 2006 | 1 | |
| Klein, Lohne | Lohne Klein | Actor | 1991 | 1 | |
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