| Kettler, Liselott, | Liselott Kettler | Actor | 1950 | 3 | |
| Kuhn, Änne, | Änne Kuhn | Actor | 1950 | 1 | |
| Koblentz, Hannelore, | Hannelore Koblentz | Actor | 1950 | 1 | |
| Kulle, Jarl | Jarl Kulle | Actor | 1950 | 2 | |
| Krause, Hans-Henrik | Hans-Henrik Krause | Actor | 1950 | 2 | |
| Knape, Gerhard | Gerhard Knape | Actor | 1950 | 1 | |
| Kahl, Hans Heinz | Hans Heinz Kahl | Actor | 1950 | 1 | |
| Kawaguchi, Ichiro | Ichiro Kawaguchi | Director | 1950 | 1 | |
| Kiss, Julia | Julia Kiss | Actor | 1950 | 1 | |
| Karen, James | James Karen | Actor | 1950 - 1951 | 1 | |
| Kamili, Charis | Charis Kamili | Actor | 1950 - 1952 | 5 | |
| Krook, Margaretha, | Margaretha Krook | Actor | 1950 - 1997 | 9 | |
| Kjellson, Ingvar | Ingvar Kjellson | Actor | 1950 - 2004 | 14 | |
| Koch, Erika | Erika Koch | Costume Designer | 1951 | 2 | |
| Kumke, Jutta | Jutta Kumke | Actor | 1951 | 1 | |
| Kačič, Mila | Mila Kačič | Actor | 1951 | 2 | |
| Keim-Strauß, Anni | Anni Keim-Strauß | Costume Designer | 1951 | 2 | |
| Katz, Bernice | Bernice Katz | Actor | 1951 | 2 | |
| Kraus, Sidney | Sidney Kraus | Actor | 1951 | 2 | |
| Kerlogue, Robert | Robert Kerlogue | Actor | 1951 | 1 | |
| Kirkman, Don | Don Kirkman | Actor | 1951 | 1 | |
| Kramer, Monroe | Monroe Kramer | Actor | 1951 | 1 | |
| Kralj, Elvira | Elvira Kralj | Actor | 1951 | 1 | |
| Koschka, Julia | Julia Koschka | Actor | 1951 | 1 | |
| Keddy, Erich | Erich Keddy | Actor | 1951 | 1 | |
| Karder, Magda | Magda Karder | Choreographer | 1951 | 1 | |
| Krings, Willy | Willy Krings | Actor | 1951 | 1 | |
| Krollmann, Karl | Karl Krollmann | Actor | 1951 | 1 | |
| Kurth, Henry | Henry Kurth | Designer, Lighting Designer | 1951 | 2 | |
| Kane, Wyman | Wyman Kane | Actor | 1951 | 1 | |
| Kammerer, Marcella | Marcella Kammerer | Actor | 1951 - 1952 | 2 | |
| Kennedy, George | George Kennedy | Actor | 1951 - 1958 | 2 | |
| Knoop, Gerhard, | Gerhard Knoop | Actor, Director | 1951 - 1961 | 129 | |
| Kirton, George | George Kirton | Actor | 1952 | 1 | |
| Kerpen, Lori | Lori Kerpen | Actor | 1952 | 2 | |
| Koelliker, Werner | Werner Koelliker | Actor | 1952 | 1 | |
| Kossowsky, Jorge | Jorge Kossowsky | Assistant Director, Director | 1952 | 3 | |
| Knüppel, Emmi | Emmi Knüppel | Actor | 1952 | 1 | |
| Korsholm, Gisela | Gisela Korsholm | Actor | 1952 | 2 | |
| Kosjek, Anita | Anita Kosjek | Actor | 1952 | 1 | |
| Kontrabecki, John | John Kontrabecki | Actor | 1952 | 1 | |
| Kostantaras, Lampros | Lampros Kostantaras | Actor | 1952 | 1 | |
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