| Kielmann, Henry, | Henry Kielmann | Actor | 1950 | 1 | |
| Kennerknecht, Hans, | Hans Kennerknecht | Musical Director | 1950 | 1 | |
| Kettler, Liselott, | Liselott Kettler | Actor | 1950 - 1966 | 3 | |
| Kuhn, Änne, | Änne Kuhn | Actor | 1950 | 1 | |
| Koblentz, Hannelore, | Hannelore Koblentz | Actor | 1950 | 1 | |
| Kochan, Stanisław, | Stanisław Kochan | Actor | 1900 | 1 | |
| Kahn, Florence, | Florence Kahn | Actor | 1900 - 1936 | 8 | |
| Koefod, Thorvald, | Thorvald Koefod | Director | 1900 | 1 | |
| Knoblauch, Edward, | Edward Knoblauch | Actor | 1900 | 1 | |
| Kazouri, Ourania, | Ourania Kazouri | Actor | 1900 - 1904 | 4 | |
| Kačalov, Vasilij, | Vasilij Kačalov | Actor | 1900 - 1924 | 11 | |
| Koševerova, M., | M. Koševerova | Actor | 1900 - 1924 | 5 | |
| Koreneva, L., | L. Koreneva | Actor | 1900 - 1924 | 5 | |
| Koonen, A., | A. Koonen | Actor | 1900 - 1924 | 5 | |
| Koševerov, Aleksandar Sergejevič, | Aleksandar Sergejevič Koševerov (Aleksandar Sergejevič Koševerov) | Actor, Director | 1900 - 1924 | 13 | |
| Knipper-Chekhova, Olga, | Olga Knipper-Chekhova | Actor | 1900 - 1918 | 6 | |
| Krusev, P., | P. Krusev | Designer | 1901 | 1 | |
| Klafstad, Ingebjørg, | Ingebjørg Klafstad | Actor | 1901 | 1 | |
| Kwiatkiewiczowa, Eugenia, | Eugenia Kwiatkiewiczowa | Actor | 1901 - 1914 | 5 | |
| Klintberg, -, | - Klintberg | Actor | 1901 - 1903 | 4 | |
| Kalogerikos, Panos, | Panos Kalogerikos | Actor | 1902 - 1916 | 12 | |
| Kalogerikou, Christina, | Christina Kalogerikou | Actor | 1902 - 1943 | 6 | |
| Kourteli, E., | E. Kourteli | Actor | 1902 | 1 | |
| Kawecka, Helena, | Helena Kawecka | Translator | 1902 | 1 | |
| Kasandzhieva, Kina, | Kina Kasandzhieva | Actor | 1902 | 1 | |
| König, Amalie, | Amalie König | Actor | 1902 | 1 | |
| Kugelberg, F., | F. Kugelberg | Director | 1902 | 1 | |
| Kline, Virginia, | Virginia Kline | Actor | 1902 - 1910 | 12 | |
| Krum, Gerda, | Gerda Krum | Actor | 1903 | 1 | |
| Korwinóvna, -, | - Korwinóvna | Actor | 1903 | 1 | |
| Kalitovič, I., | I. Kalitovič | Actor | 1903 | 1 | |
| Koumarioti, Eleni, | Eleni Koumarioti | Actor | 1903 | 2 | |
| Kinghorne, Mark, | Mark Kinghorne | Actor | 1903 | 1 | |
| Kassabov, Dotscho, | Dotscho Kassabov | Actor | 1903 - 1915 | 2 | |
| Kosiński, Feliks, | Feliks Kosiński | Actor | 1903 | 2 | |
| Kosterka, Hugo, | Hugo Kosterka | Translator | 1903 - 1947 | 5 | |
| Kliszewski, Antoni, | Antoni Kliszewski | Actor | 1903 - 1906 | 2 | |
| Kraus, Arnošt, | Arnošt Kraus | Translator | 1904 - 1941 | 11 | |
| Kafka, Rudolf, | Rudolf Kafka | Actor | 1904 - 1912 | 5 | |
| Kazimierz, Kamiński, | Kamiński Kazimierz | Actor | 1904 | 1 | |
| Kalff, Marie, | Marie Kalff | Actor | 1904 - 1928 | 2 | |
| Kelbey, Gerald A., | Gerald A. Kelbey (Gerald A. Kelbey) | Actor | 1904 | 1 | |
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