| Lucas, Wilfred | Wilfred Lucas (Wilfred Lucas) | Actor | 1903 | 5 | |
| Lion, Jeanne | Jeanne Lion (Jeanne Lion) | Actor | 1903 - 1924 | 2 | |
| Lundequist-Dahlström, Gerda | Gerda Lundequist-Dahlström (Gerda Lundequist-Dahlström) | Actor, Director | 1904 - 1920 | 5 | |
| Lackaye, Wilton | Wilton Lackaye (Wilton Lackaye) | Actor | 1904 | 1 | |
| Lindroos, Uno | Uno Lindroos (Uno Lindroos) | Actor | 1904 - 1916 | 8 | |
| Lindlöf, Märtha | Märtha Lindlöf (Märtha Lindlöf) | Actor | 1904 - 1919 | 2 | |
| Lipiński, (?) | (?) Lipiński ((?) Lipiński) | Actor | 1904 | 1 | |
| Lepeniotis, Tilemachos | Tilemachos Lepeniotis (Tilemachos Lepeniotis) | Actor | 1904 - 1907 | 2 | |
| Lambert, Milanda | Milanda Lambert (Milanda Lambert) | Actor | 1904 | 9 | |
| Lauschek, Mina | Mina Lauschek (Mina Lauschek) | Actor | 1904 - 1905 | 8 | |
| Low, George | George Low (George Low) | Actor | 1905 | 1 | |
| Lewis, James H. | James H. Lewis (James H. Lewis) | Actor | 1905 | 3 | |
| Losee, Frank | Frank Losee (Frank Losee) | Actor | 1905 | 3 | |
| Lowe, Robert | Robert Lowe (Robert Lowe) | Actor | 1905 - 1931 | 4 | |
| Leyrer, Rudolf | Rudolf Leyrer (Rudolf Leyrer) | Actor | 1897 - 1905 | 7 | |
| Laderchi, M. | M. Laderchi (M. Laderchi) | Actor | 1905 - 1907 | 5 | |
| Ljungqvist, Johan | Johan Ljungqvist (Johan Ljungqvist) | Actor | 1905 | 1 | |
| Lytton, A. Rogers | A. Rogers Lytton (A. Rogers Lytton) | Actor | 1905 | 1 | |
| Lewers, Jessica | Jessica Lewers (Jessica Lewers) | Actor | 1905 | 1 | |
| Lavern, Albert | Albert Lavern (Albert Lavern) | Actor | 1905 | 1 | |
| Lage, Charles E. | Charles E. Lage (Charles E. Lage) | Actor | 1905 | 1 | |
| Lewers, Edward | Edward Lewers (Edward Lewers) | Actor | 1905 | 1 | |
| Lowe, Trevor | Trevor Lowe (Trevor Lowe) | Actor | 1905 - 1907 | 2 | |
| Lang, Matheson | Matheson Lang (Matheson Lang) | Actor | 1905 | 1 | |
| Lockwood, Miss | Miss Lockwood (Miss Lockwood) | Actor | 1905 | 1 | |
| Lie, Sigurd | Sigurd Lie (Sigurd Lie) | Composer | 1905 - 1911 | 4 | |
| Lascelles, Frank | Frank Lascelles (Frank Lascelles) | Actor | 1905 | 1 | |
| Louise, - | - Louise (- Louise) | Actor | 1906 - 1911 | 6 | |
| Lier, František | František Lier (František Lier) | Director | 1906 | 1 | |
| Lindenlaub, Th. | Th. Lindenlaub (Th. Lindenlaub) | Translator | 1906 - 1907 | 2 | |
| Louis, Loudovikos | Loudovikos Louis (Loudovikos Louis) | Actor | 1906 - 1933 | 7 | |
| Lorimer, Wright | Wright Lorimer (Wright Lorimer) | Actor, Director | 1906 - 1907 | 4 | |
| Lyon, Damon | Damon Lyon (Damon Lyon) | Actor | 1906 - 1907 | 3 | |
| Loomis, Evelyn | Evelyn Loomis (Evelyn Loomis) | Actor | 1906 - 1907 | 6 | |
| Lindsay, Marguerite | Marguerite Lindsay (Marguerite Lindsay) | Actor | 1906 - 1907 | 3 | |
| Lukács, György | György Lukács (György Lukács) | Translator | 1906 - 1930 | 11 | |
| Laus, Ludvigs | Ludvigs Laus (Ludvigs Laus) | Actor | 1907 - 1912 | 3 | |
| Lenkei, Hedvig L. | Hedvig L. Lenkei (Hedvig L. Lenkei) | Actor, Translator | 1907 - 1923 | 5 | |
| Lieb, Herman | Herman Lieb (Herman Lieb) | Actor | 1907 - 1909 | 4 | |
| Lorandou, Eleonora | Eleonora Lorandou (Eleonora Lorandou) | Actor | 1907 | 1 | |
| Lutschkova, R. | R. Lutschkova (R. Lutschkova) | Actor | 1907 | 1 | |
| Lee, Leopold | Leopold Lee | Actor | 1907 | 1 | |
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