| Leuch, Dorothy | Dorothy Leuch | Actor | 1948 | 1 | |
| Laren, Mac | Mac Laren | Actor | 1948 | 1 | |
| Lefebvre, Rolf | Rolf Lefebvre | Actor | 1948 | 1 | |
| Lawrence, Jean | Jean Lawrence | Actor | 1948 | 2 | |
| Løvland, Tuva | Tuva Løvland | Actor | 1948 | 1 | |
| Lamond, James | James Lamond | Actor | 1948 | 1 | |
| Links, Friedrich, | Friedrich Links | Actor | 1948 - 1953 | 2 | |
| Ling, Bai, | Bai Ling | Actor | 1948 - 1956 | 2 | |
| Lacey, Catherine | Catherine Lacey | Actor | 1948 - 1965 | 4 | |
| Lindinger, Jo, | Jo Lindinger | Designer | 1949 | 1 | |
| Lenz, Ruth, | Ruth Lenz | Choreographer | 1949 | 1 | |
| Lamprecht, Vera, | Vera Lamprecht | Actor | 1949 | 1 | |
| Logelin, Jo Ann | Jo Ann Logelin | Actor | 1949 | 1 | |
| Leite, Roberto, P. | Roberto P. Leite | Actor | 1949 | 1 | |
| Lima, Terezinha, C. | Terezinha C. Lima | Actor | 1949 | 1 | |
| Lawrence, Phil | Phil Lawrence | Actor | 1949 | 1 | |
| Leon, Axel, N. | Axel N. Leon | Actor | 1949 | 1 | |
| Lindberg, Lennart | Lennart Lindberg | Actor | 1949 | 1 | |
| Leal, Tereza | Tereza Leal | Actor | 1949 | 1 | |
| Lehtimäki, Aino | Aino Lehtimäki | Actor | 1949 | 1 | |
| Lieberman, Ruth | Ruth Lieberman | Actor | 1949 | 3 | |
| Lietzau, Hans, | Hans Lietzau | Director | 1949 - 1989 | 2 | |
| Leyrer, Willy, | Willy Leyrer | Actor | 1950 | 1 | |
| Lübbert, Martin, | Martin Lübbert | Actor | 1950 | 1 | |
| Ledosquet, Trude, | Trude Ledosquet | Actor | 1950 | 1 | |
| Lopatta, Edeltraut, | Edeltraut Lopatta | Actor | 1950 | 1 | |
| Legal, Marga, | Marga Legal | Actor | 1950 | 1 | |
| Lessing, Hugo, | Hugo Lessing | Actor | 1950 | 1 | |
| Lozal, Marianne, | Marianne Lozal | Actor | 1950 | 1 | |
| Leon, Dorothy | Dorothy Leon | Actor | 1950 | 1 | |
| Lissiak, Elvi | Elvi Lissiak | Actor | 1950 | 1 | |
| Lewis, Robert | Robert Lewis | Director | 1950 | 1 | |
| Ludwig, Salem | Salem Ludwig | Actor | 1950 | 1 | |
| Lyons, Gene | Gene Lyons | Actor | 1950 | 1 | |
| Lappa Starženeckij, Ju. | Ju. Lappa Starženeckij | Director | 1950 | 1 | |
| Lynn, Jack | Jack Lynn | Director | 1950 - 1953 | 2 | |
| Lewin, Michael | Michael Lewin | Actor | 1950 - 1956 | 2 | |
| Luzzati, Emanuele | Emanuele Luzzati | Costume Designer, Designer | 1950 - 1973 | 13 | |
| Līne, Velta | Velta Līne | Actor | 1950 - 1991 | 2 | |
| Lazareth, Helene | Helene Lazareth | Actor | 1951 | 1 | |
| Lindsley, Charles F., | Charles F. Lindsley (Charles F. Lindsley) | Director | 1951 | 1 | |
| Laumer, Keith | Keith Laumer | Actor, Designer | 1951 | 2 | |
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