| Lindgren, Carl, | Carl Lindgren | Actor | 1911 - 1912 | 3 | |
| Lizeti, Eleni, | Eleni Lizeti | Actor | 1911 - 1912 | 2 | |
| Leisner, Mr., | Mr. Leisner | Actor | 1911 | 1 | |
| Lilie, Mr., | Mr. Lilie | Actor | 1911 | 1 | |
| Lüder, Frl., | Frl. Lüder | Actor | 1911 | 1 | |
| Lenau, Charlotte, | Charlotte Lenau | 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 | |
| Linhartova, B. | B. Linhartova | Actor | 1911 | 1 | |
| Leister, Hermione | Hermione Leister | Actor | 1911 | 2 | |
| Lüdowa, Aleksandra | Aleksandra Lüdowa | Actor | 1911 | 1 | |
| Lubicz-Mogilnicka, Halina | Halina Lubicz-Mogilnicka | Actor | 1911 | 1 | |
| Lenoir, Paul | Paul Lenoir | Actor | 1911 | 1 | |
| Leffler, Robert | Robert Leffler | Actor | 1911 | 1 | |
| Laub, Alexander | Alexander Laub | Actor | 1911 | 1 | |
| Langer, Willy | Willy Langer | Actor | 1911 | 1 | |
| Leibelt, Hans, | Hans Leibelt | Actor | 1910 - 1930 | 3 | |
| Lewis, Catherine, | Catherine Lewis | Actor, Costume Designer, Director | 1910 - 1917 | 8 | |
| Lucas, Kurt, | Kurt Lucas | Actor | 1910 - 1915 | 6 | |
| Lawton, Thais, | Thais Lawton | Actor | 1910 - 1915 | 4 | |
| Liedgens, Klara, | Klara Liedgens | Actor | 1910 - 1911 | 3 | |
| Lübbert, Susanne, | Susanne Lübbert | Actor | 1910 - 1911 | 2 | |
| Lewis, Sheldon, | Sheldon Lewis | Actor | 1910 - 1911 | 4 | |
| Luck, Emily, | Emily Luck | Actor | 1910 - 1911 | 2 | |
| Lenhart, Leo | Leo Lenhart | Actor | 1910 - 1911 | 2 | |
| Lengyel, Irén | Irén Lengyel | Actor | 1910 - 1911 | 5 | |
| Liebig, Frl., | Frl. Liebig | Actor | 1910 | 1 | |
| Lohmeyer, Mr., | Mr. Lohmeyer | Actor | 1910 | 1 | |
| Laske, Norbert, | Norbert Laske | Actor | 1910 | 1 | |
| Lichtenegg, Marie, | Marie Lichtenegg | Actor | 1910 | 1 | |
| La Porte, Walter | Walter La Porte | Musical Director | 1910 | 1 | |
| Lang, Emil, | Emil Lang | Actor | 1909 - 1956 | 2 | |
| Lion, Fritz, | Fritz Lion | Actor | 1909 - 1934 | 3 | |
| Labadie, Harriet | Harriet Labadie | Actor, Adaptation | 1909 - 1914 | 30 | |
| Lahrius, -, | - Lahrius | Actor | 1909 - 1913 | 2 | |
| Lauritzen, Lauritz, | Lauritz Lauritzen | Actor | 1909 - 1911 | 2 | |
| Lauberts, Ērihs, | Ērihs Lauberts | Actor, Director | 1909 - 1910 | 2 | |
| Lemke, Selina, | Selina Lemke | Actor | 1909 | 1 | |
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