| Kyron, George | George Kyron | Actor | 1948 | 1 | |
| Kent, Humphrey | Humphrey Kent | Actor | 1948 | 1 | |
| Kemmerer, Edward | Edward Kemmerer | Actor | 1948 | 1 | |
| Kelley, Byron, R. | Byron R. Kelley | Director | 1948 | 1 | |
| Kvasova, Maria | Maria Kvasova (Мария Квасова) | Actor | 1948 | 1 | |
| Kjølaas, Gerd | Gerd Kjølaas | Choreographer | 1948 - 1949 | 7 | 1 |
| Klokić, Abdulah | Abdulah Klokić | Actor | 1948 - 1956 | 2 | |
| Koon, Robert | Robert Koon | Actor, Lighting Designer | 1948 - 2018 | 3 | |
| Krauskopf, Carola | Carola Krauskopf | Choreographer | 1949 | 1 | |
| Klinger, Eugen | Eugen Klinger | Actor | 1949 | 1 | |
| Korb, Irene | Irene Korb | Actor | 1949 | 1 | |
| Klevenow, Heinz | Heinz Klevenow | Actor | 1949 | 1 | |
| Klein, Gerda Maria | Gerda Maria Klein | Actor | 1949 | 1 | |
| Karali, Tonia | Tonia Karali | Actor | 1949 | 1 | |
| Keith, Sherwood | Sherwood Keith | Director | 1949 | 1 | |
| Kuhn, LeRoy | LeRoy Kuhn | Actor | 1949 | 1 | |
| Krook, Bernard | Bernard Krook | Actor | 1949 | 1 | |
| Kosofsky, Martin, I. | Martin I. Kosofsky | Actor | 1949 | 1 | |
| Kenyon, Sandy | Sandy Kenyon | Actor | 1949 | 2 | |
| Kreuter, Horst | Horst Kreuter | Actor | 1949 - 1962 | 2 | |
| Kerbler, Eva | Eva Kerbler | Actor | 1949 - 1970 | 3 | |
| Kristiansen, Thor Inge | Thor Inge Kristiansen | Actor | 1949 - 1974 | 9 | 1 |
| Keidser, Willy | Willy Keidser | Actor | 1949 - 1976 | 7 | |
| Kilty, Jerome | Jerome Kilty | Actor | 1949 - 1996 | 3 | |
| Klētnieks, Karps | Karps Klētnieks | Actor | 1950 | 1 | |
| Krontāls, Jānis | Jānis Krontāls | Designer | 1950 | 1 | |
| Krūmiņa, Olga | Olga Krūmiņa | Actor | 1950 | 1 | |
| Krug, Ellen | Ellen Krug | Actor | 1950 | 1 | |
| Kollek, Helmut | Helmut Kollek | Actor | 1950 | 1 | |
| Kissel, Helmut | Helmut Kissel | Actor | 1950 | 1 | |
| Kaufmann, Charlotte | Charlotte Kaufmann | Actor | 1950 | 1 | |
| Kielmann, Henry | Henry Kielmann | Actor | 1950 | 1 | |
| Kennerknecht, Hans | Hans Kennerknecht | Musical Director | 1950 | 1 | |
| Kuhn, Änne | Änne Kuhn | Actor | 1950 | 1 | |
| Koblentz, Hannelore | Hannelore Koblentz | Actor | 1950 | 1 | |
| Knape, Gerhard | Gerhard Knape | Actor | 1950 | 1 | |
| Kahl, Hans Heinz | Hans Heinz Kahl | Actor | 1950 | 1 | |
| Kawaguchi, Ichiro | Ichiro Kawaguchi | Director | 1950 | 1 | |
| Karen, James | James Karen | Actor | 1950 | 1 | |
| Kiss, Julia | Julia Kiss | Actor | 1950 | 1 | |
| Kamili, Charis | Charis Kamili | Actor | 1950 - 1952 | 5 | |
| Kohls, Walter | Walter Kohls | Actor | 1950 - 1961 | 2 | |
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