| Kreeft, Bart | Bart Kreeft | Actor | 1917 | 1 | |
| Krause, Reinhold | Reinhold Krause | Actor | 1917 | 1 | |
| Karer, Fritz | Fritz Karer | Actor | 1917 | 1 | |
| Kleiber, Erich | Erich Kleiber | Conductor | 1917 | 1 | |
| Kramer, Folkert | Folkert Kramer | Actor | 1917 - 1918 | 2 | |
| Kelemen, Pál | Pál Kelemen | Actor | 1917 - 1918 | 4 | |
| König, Gisela | Gisela König | Actor | 1917 - 1921 | 3 | |
| Koch, Betty | Betty Koch | Actor | 1917 - 1921 | 2 | |
| Kner, Hermann | Hermann Kner | Actor | 1917 - 1921 | 2 | |
| Kalniņš, Rodrigo | Rodrigo Kalniņš | Actor | 1917 - 1921 | 3 | |
| Kley, Wilhelmina | Wilhelmina Kley | Actor | 1917 - 1925 | 2 | |
| Kirkeby, Betty | Betty Kirkeby | Actor | 1917 - 1928 | 2 | |
| Kook, Beryl | Beryl Kook | Actor | 1917 - 1930 | 2 | |
| Kvēps, Konrāds | Konrāds Kvēps | Actor | 1917 - 1937 | 3 | |
| Krischke, Alois | Alois Krischke | Actor | 1917 - 1938 | 4 | |
| Kleinoschegg, Willi | Willi Kleinoschegg | Actor | 1917 - 1942 | 8 | 1 |
| Koren-Wiberg, Mary | Mary Koren-Wiberg | Actor | 1917 - 1961 | 18 | 1 |
| Kleider, Sarah | Sarah Kleider | Actor | 1918 | 1 | |
| Konarski, Szymon | Szymon Konarski | Actor | 1918 | 1 | |
| Kuhn, - | - Kuhn | Actor | 1918 | 2 | |
| Kroll, Felix | Felix Kroll | Actor | 1918 | 2 | |
| Krulle, Charlotte | Charlotte Krulle | Actor | 1918 | 3 | |
| Knörer, Willi | Willi Knörer | Actor | 1918 | 1 | |
| Kurz, Werner | Werner Kurz | Actor | 1918 | 2 | |
| Krinkels, L. | L. Krinkels | Director | 1918 | 1 | |
| Karsten, Paul | Paul Karsten | Actor | 1918 | 1 | |
| Katsura, Hisako | Hisako Katsura | Actor | 1918 | 1 | |
| Khmara, Grigory | Grigory Khmara | Actor | 1918 | 1 | |
| Kean, Frances | Frances Kean | Actor | 1918 | 1 | |
| Kowalski, Henryk | Henryk Kowalski | Actor | 1918 | 1 | |
| Knott, Adelbert | Adelbert Knott | Actor | 1918 | 1 | |
| Klein, Alfred | Alfred Klein | Actor | 1918 | 1 | |
| Kugelmann, Georg | Georg Kugelmann | Actor | 1918 | 1 | |
| Kreisler, Otto | Otto Kreisler | Director | 1918 | 1 | |
| Kostina, K. | K. Kostina | Designer | 1918 | 1 | |
| Kosch, Emma | Emma Kosch | Actor | 1918 - 1919 | 3 | |
| Kock, Katharina | Katharina Kock | Actor | 1918 - 1919 | 2 | |
| Krall, Wilhelmine | Wilhelmine Krall | Actor | 1918 - 1920 | 3 | |
| Kohler, Anna | Anna Kohler | Actor | 1918 - 1921 | 2 | |
| Krämer, Albert | Albert Krämer | Actor | 1918 - 1923 | 2 | |
| Krahn, Maria | Maria Krahn | Actor | 1918 - 1935 | 2 | 1 |
| Kohlund, Ekkehard | Ekkehard Kohlund | Actor, Designer | 1918 - 1946 | 13 | 1 |
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