| Karpáti, Sándor | Sándor Karpáti | Actor | 1906 - 1908 | 5 | |
| Kručiņins, - | - Kručiņins | Actor | 1907 | 1 | |
| Koškins, Kristaps | Kristaps Koškins | Actor, Director | 1907 - 1918 | 10 | |
| Klintscharov, Ivan G. | Ivan G. Klintscharov | Translator | 1907 | 1 | |
| Köllner, Paul | Paul Köllner | Actor | 1907 | 1 | |
| Koht, Thorvald | Thorvald Koht | Actor, Director | 1907 - 1938 | 25 | |
| Kourtelis, (?) | (?) Kourtelis | Actor | 1907 | 3 | |
| Kruckenberg, Ivan | Ivan Kruckenberg | Actor | 1907 - 1908 | 2 | |
| Kaucká, Juliana | Juliana Kaucká | Actor | 1908 | 1 | |
| Kal´manson, M. | M. Kal´manson | Designer | 1908 | 1 | |
| Kachalov, Vasily | Vasily Kachalov | Actor | 1908 | 1 | |
| Kaupiņa, Anna | Anna Kaupiņa | Actor | 1908 - 1909 | 2 | |
| Krysińska, Faustyna | Faustyna Krysińska | Actor | 1908 | 1 | |
| Keefe, Belle | Belle Keefe | Actor | 1908 | 1 | |
| Kelemen, Mária | Mária Kelemen | Actor | 1908 - 1931 | 2 | |
| Kuncewicz, Witold | Witold Kuncewicz | Actor | 1908 - 1917 | 3 | |
| Kamińska, Jadwiga | Jadwiga Kamińska | Actor | 1908 - 1910 | 2 | |
| Korzeniewska, Józefa | Józefa Korzeniewska | Actor | 1908 | 1 | |
| Kasparová, Klára | Klára Kasparová | Actor | 1908 | 1 | |
| Kennicott, Grace | Grace Kennicott | Actor | 1908 | 1 | |
| Kiernicki, Marian | Marian Kiernicki | Actor | 1908 - 1915 | 3 | |
| Krystkiewiczówna, Janina | Janina Krystkiewiczówna | Actor | 1908 | 1 | |
| Keeman, W.M. | W. M. Keeman (W.M. Keeman) | Actor | 1909 | 2 | |
| Keasbey, R.Q. | R. Q. Keasbey (R.Q. Keasbey) | Actor | 1909 | 2 | |
| Kokalis, Augusts | Augusts Kokalis | Actor | 1909 - 1914 | 3 | |
| Keim, Adelaide | Adelaide Keim | Actor | 1909 | 1 | |
| Keim, Chauncey | Chauncey Keim | Actor | 1909 | 1 | |
| Kelley, Louise | Louise Kelley | Actor | 1909 | 1 | |
| Krzewińska, Barbara | Barbara Krzewińska | Actor | 1909 | 1 | |
| Kirov, Geno | Geno Kirov | Actor | 1909 - 1911 | 3 | |
| Kozhuharov, Stojan | Stojan Kozhuharov | Actor | 1909 | 1 | |
| Kleczyńska, Anna (?) | Anna (?) Kleczyńska | Actor | 1909 | 1 | |
| Kita, Renzo | Renzo Kita | Designer | 1909 | 1 | |
| Kawarazaki, Shisen | Shisen Kawarazaki | Actor | 1909 | 1 | |
| Kontogiannis, Orestis | Orestis Kontogiannis | Actor | 1909 - 1910 | 4 | |
| Kelch, Michael | Michael Kelch | Actor | 1909 | 1 | |
| Koumparis, Theodoros | Theodoros Koumparis | Actor | 1909 | 1 | |
| Koumpari, A. | A. Koumpari | Actor | 1909 | 1 | |
| Keenan, W.B. | W. B. Keenan (W.B. Keenan) | Actor | 1909 | 1 | |
| Kolár, Karel | Karel Kolár | Actor | 1910 - 1941 | 5 | |
| Kofoed, Juul | Juul Kofoed | Actor | 1910 | 2 | |
| Kamiński, Wiktor | Wiktor Kamiński | Actor | 1910 | 1 | |
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