| Lipczyński, Alfred, | Alfred Lipczyński | Actor | 1908 - 1909 | 1 | |
| Lorenz, Christel, | Christel Lorenz | Actor | 1908 - 1912 | 6 | |
| Lemke, Selina, | Selina Lemke | Actor | 1909 | 1 | |
| Lüttjohann, Ferdinand, | Ferdinand Lüttjohann | Actor | 1909 | 1 | |
| Lang, Emil, | Emil Lang | Actor | 1909 | 2 | |
| Lahrius, -, | - Lahrius | Actor | 1909 | 2 | |
| Lion, Fritz, | Fritz Lion | Actor | 1909 | 3 | |
| Lund, Aage, | Aage Lund | Actor | 1909 | 1 | |
| Lattin, J.D.B., | J. D. B. Lattin (J.D.B. Lattin) | Actor | 1909 | 2 | |
| Lane, J.C., | J. C. Lane (J.C. Lane) | Actor | 1909 | 2 | |
| Lauberts, Ērihs, | Ērihs Lauberts | Actor, Director | 1909 | 2 | |
| Leland, Roca, | Roca Leland | Actor | 1909 | 1 | |
| Lindau, Paul | Paul Lindau | Director | 1909 | 1 | |
| Lindner, Emil | Emil Lindner | Actor | 1909 | 1 | |
| Laasner, Rosa | Rosa Laasner | Actor | 1909 | 2 | |
| Langer, Freda, | Freda Langer | Actor | 1909 - 1910 | 1 | |
| Lauritzen, Lauritz, | Lauritz Lauritzen | Actor | 1909 - 1911 | 2 | |
| Labadie, Harriet | Harriet Labadie | Actor, Adaptation | 1909 - 1914 | 30 | |
| Liebig, Frl., | Frl. Liebig | Actor | 1910 | 1 | |
| Lohmeyer, Mr., | Mr. Lohmeyer | Actor | 1910 | 1 | |
| Leibelt, Hans, | Hans Leibelt | Actor | 1910 | 3 | |
| Liedgens, Klara, | Klara Liedgens | Actor | 1910 | 3 | |
| Laske, Norbert, | Norbert Laske | Actor | 1910 | 1 | |
| Lewis, Sheldon, | Sheldon Lewis | Actor | 1910 | 4 | |
| Luck, Emily, | Emily Luck | Actor | 1910 | 2 | |
| La Porte, Walter | Walter La Porte | Musical Director | 1910 | 1 | |
| Lengyel, Irén | Irén Lengyel | Actor | 1910 | 5 | |
| Lewis, Catherine, | Catherine Lewis | Actor, Costume Designer, Director | 1910 - 1911 | 8 | |
| Lenhart, Leo | Leo Lenhart | Actor | 1910 - 1911 | 2 | |
| Lichtenegg, Marie, | Marie Lichtenegg | Actor | 1910 - 1912 | 1 | |
| Lübbert, Susanne, | Susanne Lübbert | Actor | 1910 - 1912 | 2 | |
| Lucas, Kurt, | Kurt Lucas | Actor | 1910 - 1915 | 6 | |
| Lawton, Thais, | Thais Lawton | Actor | 1910 - 1915 | 4 | |
| Lund, Karen | Karen Lund | Actor | 1911 | 6 | |
| Leisner, Mr., | Mr. Leisner | Actor | 1911 | 1 | |
| Lilie, Mr., | Mr. Lilie | Actor | 1911 | 1 | |
| Loehmke, Conrad, | Conrad Loehmke | Actor | 1911 | 1 | |
| Limerick, Mona, | Mona Limerick | Actor | 1911 | 1 | |
| Landau, Gustaw, | Gustaw Landau | Designer | 1911 | 1 | |
| Llewelyn, Ned, | Ned Llewelyn | Actor | 1911 | 1 | |
| Lancova, F. | F. Lancova | Actor | 1911 | 1 | |
| Lukeš, M. | M. Lukeš | Actor | 1911 | 1 | |
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