| Leonie, Aenne | Aenne Leonie | Actor | 1914 | 1 | |
| Laugs, Robert | Robert Laugs | Musical Director | 1914 | 1 | |
| Löwe, Sonja, | Sonja Löwe | Actor | 1914 - 1916 | 1 | |
| Lehndorff-Schöttle, Frida, | Frida Lehndorff-Schöttle | Actor | 1914 - 1916 | 3 | |
| Lütjohann, Reinhold, | Reinhold Lütjohann | Actor | 1914 - 1917 | 12 | |
| Linden, Gustaf, | Gustaf Linden | Director | 1914 - 1924 | 5 | |
| Luther, Albert | Albert Luther | Actor | 1914 - 1950 | 10 | |
| Leube, Elfriede, | Elfriede Leube | Actor | 1915 | 1 | |
| Loré, Karl, | Karl Loré | Actor | 1915 | 1 | |
| Lorenz, Marie, | Marie Lorenz | Actor | 1915 | 1 | |
| Larina, Hedda, | Hedda Larina | Actor | 1915 | 1 | |
| Lena, Magda, | Magda Lena | Actor | 1915 | 5 | |
| Linge, Martin, | Martin Linge | Actor | 1915 | 5 | |
| Lundequist-Dahlstrøm, Fru, | Fru Lundequist-Dahlstrøm | Actor | 1915 | 1 | |
| Lippert, Ernst | Ernst Lippert | Actor | 1915 | 2 | |
| Leudesdorff, Ernst, | Ernst Leudesdorff | Actor | 1915 - 1922 | 11 | |
| Laseur, Cees, | Cees Laseur | Actor, Director, Producer | 1916 | 4 | |
| Leßmann, -, | - Leßmann | Actor | 1916 | 1 | |
| Lanz, -, | - Lanz | Actor | 1916 | 2 | |
| Lange, Raul, | Raul Lange | Actor | 1916 | 3 | |
| Lahdensuo, Jalmari | Jalmari Lahdensuo | Director | 1916 | 1 | |
| Lefèbre, Else | Else Lefèbre | Actor | 1916 | 1 | |
| Liebl, Max | Max Liebl | Actor, Adaptation, Director | 1916 - 1917 | 7 | |
| Lohse, Otto | Otto Lohse | Conductor, Musical Director | 1916 - 1917 | 2 | |
| Lindikoff, Ludwig, | Ludwig Lindikoff | Actor, Director | 1916 - 1918 | 11 | |
| Larsen, Leif, | Leif Larsen | Actor | 1916 - 1928 | 23 | |
| Lie, Ella, | Ella Lie | Actor | 1917 | 19 | |
| Lindby, Hedvig, | Hedvig Lindby | Actor | 1917 | 1 | |
| Lewis, Ethel | Ethel Lewis | Actor | 1917 | 1 | |
| Liedtke, Walter, | Walter Liedtke | Actor | 1917 | 6 | |
| Lütjens, Marie, | Marie Lütjens | Actor | 1917 | 4 | |
| Lassow, Thea, | Thea Lassow | Actor | 1917 | 1 | |
| Lucas, Curt, | Curt Lucas | Actor | 1917 | 1 | |
| Lang, Friedl, | Friedl Lang | Actor | 1917 | 2 | |
| Leonardi, Anna, | Anna Leonardi | Actor | 1917 | 1 | |
| Leśniewski, Józef, | Józef Leśniewski | Actor | 1917 | 8 | |
| Lortzing, Albert, | Albert Lortzing | Composer | 1917 | 1 | |
| Lem, Per, | Per Lem | Actor | 1917 | 11 | |
| Le Feuvre, Guy, | Guy Le Feuvre | Composer | 1917 | 1 | |
| Lobo-Braakensiek, Greta, | Greta Lobo-Braakensiek | Actor | 1917 | 2 | |
| LeClerq, Florence | Florence LeClerq | Actor | 1917 | 1 | |
| Lothar, Franzi | Franzi Lothar | Actor | 1917 | 1 | |
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