| Kloempken, Tina | Tina Kloempken | Costume Designer | 2014 - 2016 | 2 | |
| Kaspar, Heinz-Josef | Kaspar, Heinz-Josef | Actor | 1997 | 1 | |
| Kranz, M. | M. Kranz | Costume Designer | 1997 | 1 | |
| Kornman, Cam | Cam Kornman | Actor | 1997 | 1 | |
| Kishida, Kyoko | Kyoko Kishida | Actor | 1997 | 1 | |
| Karasawa, Jyun | Jyun Karasawa | Actor | 1997 | 1 | |
| Kublashvili, Tornike | Tornike Kublashvili | Designer | 2014 | 1 | |
| Kirsche, Michaela | Michaela Kirsche | Costume Designer | 2014 | 1 | |
| Kracht, Selma | Selma Kracht | Costume Designer | 2014 | 1 | |
| Koch, Roland | Roland Koch | Actor | 1997 - 2017 | 10 | |
| Kazémi, Clémence | Clémence Kazémi | Designer | 2014 | 6 | |
| Karadeniz, Özgür | Özgür Karadeniz | Actor | 2007 - 2014 | 5 | |
| Kolip, Manuel | Manuel Kolip | Designer | 2014 | 1 | |
| Kreischer, Jutta | Jutta Kreischer | Costume Designer | 2003 - 2017 | 4 | |
| Kuzmanova, Krasimira | Krasimira Kuzmanova | Actor | 2014 | 1 | |
| Konstantinov, Sergey | Sergey Konstantinov | Actor | 2014 | 1 | |
| Kleiber, Eleonore | Eleonore Kleiber | Costume Designer | 1964 - 2000 | 53 | |
| Kelemen, Pál | Pál Kelemen | Actor | 1917 - 1918 | 4 | |
| Keilen, Tor, Itar | Tor Itar Keilen | Actor | 2014 | 1 | |
| Kahl, Franka, Anne | Franka Anne Kahl | Actor | 2002 - 2013 | 3 | |
| Kuznick, Andreas | Andreas Kuznick | Actor | 2013 | 2 | |
| Klawonn, Julia | Julia Klawonn | Actor | 2013 | 2 | |
| Kofler, Karin | Karin Kofler | Actor | 2013 | 1 | |
| Kvam, Kyrre | Kyrre Kvam | Composer | 2013 | 1 | |
| Kulle, Josefin | Josefin Kulle | Mask Maker | 2013 | 1 | |
| Kjellberg, Magnus | Magnus Kjellberg | Lighting Designer | 2013 | 1 | |
| Károlyi, János | János Károlyi | Actor | 1920 | 1 | |
| Kwasinski, Ilena | Ilena Kwasinski | Actor | 1969 | 2 | |
| Kemrová, Olga | Olga Kemrová | Actor | 1969 | 1 | |
| Kjer, Bodil | Bodil Kjer | Actor | 1969 | 1 | |
| Kusano, Hiroshi | Hiroshi Kusano | Actor | 1997 | 1 | |
| Kjær, Terje | Terje Kjær | Actor, Dancer | 1969 | 2 | |
| King, Kathy | Kathy King | Actor | 1969 - 1970 | 3 | |
| Knell, Cathy | Cathy Knell | Actor | 1969 | 2 | |
| Kantanen, Eeva | Eeva Kantanen | Actor | 1969 | 1 | |
| Kolegar, Jan | Jan Kolegar | Actor | 1997 | 1 | |
| Kalousová, Lenka | Lenka Kalousová | Costume Designer, Designer | 1997 | 2 | |
| Kőműves, Sándor | Sándor Kőműves | Actor | 1924 | 1 | |
| Kovács, Károly | Károly Kovács | Actor | 1924 - 1964 | 7 | |
| Keim, Heidi | Heidi Keim | Actor | 1976 - 1997 | 2 | |
| Keim, Raimund | Raimund Keim | Actor | 1976 - 1997 | 2 | |
| Kompatscher, Franz | Franz Kompatscher | Actor | 1997 | 1 | |
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