| Lyceum | Lyceum | United States of America, Rochester | 1903-04-03 | 1903-04-04 | 1903 | 1 | |
| Lyceum Theatre | Lyceum Theatre | England, Sheffield, 55 Norfolk Street | 1903-06-15 | 1910-06-02 | 1903–1913 | 9 | |
| Lafayette | Lafayette | United States of America, Lafayette | 1903-10-16 | 1903-10-16 | 1903 | 1 | |
| La Crosse | La Crosse | United States of America, La Crosse | 1903-11-10 | 1903-11-10 | 1903 | 1 | |
| Logansport | Logansport | United States of America, Logansport | 1903-12-08 | 1903-12-08 | 1903 | 1 | |
| Lewinston Opera House | Lewinston Opera House | United States of America, Lewinston | 1904-02-16 | 1904-02-16 | 1904 | 1 | |
| Lyric Theatre | Lyric Theatre | United States of America, New York, 213 West 42nd Street | 1904-04-15 | 1908-05-13 | 1904–1911 | 5 | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Harrisburg | 1904-05-12 | 1908-03-28 | 1904–1907 | 2 | |
| Lyric Theatre | Lyric Theatre | United States of America, Allentown | 1904-05-13 | 1904-05-13 | 1904 | 1 | |
| Lead Opera House | Lead Opera House | United States of America, Lead | 1905-03-25 | 1905-03-25 | 1905 | 1 | |
| Landskrona Teater | Landskrona Teater | Sweden, Landskrona, Östergatan 18 | 1905-04-05 | -- | 1905 | 1 | |
| Lwowski Teatr Ludowy | Lwowski Teatr Ludowy | Poland, Tarnów | 1906-10-01 | -- | 1906 | 1 | |
| Lyceum | Lyceum | United States of America, Scranton | 1907-03-25 | 1907-03-25 | 1907 | 1 | |
| Laird Opera House | Laird Opera House | United States of America, Greenville | 1907-09-07 | 1907-09-07 | 1907 | 1 | |
| Løgstør | Løgstør | Denmark, Løgstør | 1907-11-04 | -- | 1907 | 1 | |
| Liepājas Latviešu teātris | Liepājas Latviešu teātris | Latvia, Liepāja, Teātra 4 | 1907-11-04 | 1908-04-23 | 1907–1915 | 11 | |
| Luella Theatre | Luella Theatre | United States of America, Chillicothe | 1908-02-04 | 1908-02-04 | 1908 | 1 | |
| Los Angeles Theatre | Los Angeles Theatre | United States of America, Los Angeles | 1908-04-04 | 1908-04-04 | 1908 | 1 | |
| Liepājas Tautas Teātris | Liepājas Tautas Teātris | Latvia, Liepaja, Rožu laukums 5/6 | 1908-04-15 | -- | 1908–1974 | 3 | |
| Lloyd's Opera House | Lloyd's Opera House | United States of America, North Platte | 1908-06-11 | 1908-06-11 | 1908 | 1 | |
| Lyric Theatre | Lyric Theatre | United States of America, Portland | 1908-07-07 | 1908-07-07 | 1908 | 1 | |
| Lublin | Lublin | Poland, Lublin | 1908-09-15 | -- | 1908–1917 | 3 | |
| Lyric Theatre | Lyric Theatre | United States of America, Jakcson | 1908-10-12 | 1908-10-12 | 1908 | 1 | |
| Leipziger Schauspielhaus | Leipziger Schauspielhaus | Germany, Leipzig, Sophienstrasse 19 | 1909-01-13 | -- | 1909–1928 | 8 | |
| Langelands Teater | Langelands Teater | Denmark, Langelands | 1909-11-01 | -- | 1909 | 2 | |
| Lyceum Theater | Lyceum Theater | United States of America, Ithaca | 1909-12-16 | -- | 1909 | 1 | |
| LaBelle Theatre | LaBelle Theatre | United States of America, Pittsburg | 1910-11-10 | 1910-11-10 | 1910 | 1 | |
| Longacre Theatre (Little Studio) | Longacre Theatre (Little Studio) | United States of America, New York, 220 W 48th St | 1911-01-08 | 1915-04-22 | 1911–1919 | 3 | |
| Little Theatre, The | The Little Theatre | England, London | 1911-03-28 | -- | 1911–1935 | 2 | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Scranton | 1911-12-27 | 1911-12-27 | 1911 | 1 | |
| Little Theatre | Little Theatre | Ireland, Dublin, R127, Townparks, Skerries | 1912-05-17 | 1913-12-09 | 1912–1913 | 3 | |
| Lučenec | Lučenec | Slovak Republic, Lučenec | 1912-10-08 | 1912-11-22 | 1912–1939 | 4 | |
| Little Theatre | Little Theatre | United States of America, Cincinnati | 1913-- | 1913-- | 1913 | 1 | |
| Laguna, La | La Laguna (Santa Cruz de Tenerife) | Spain | 1914-- | -- | 1914 | 1 | |
| Little Theatre | Little Theatre | United States of America, Chicago | 1914-04-28 | 1914-04-28 | 1914 | 1 | |
| Lorensbergsteatern | Lorensbergsteatern | Sweden, Gothenburg, Berzeliigatan 4 | 1917-03-09 | -- | 1917–1928 | 9 | |
| Latviešu strādnieku teātris | Latviešu strādnieku teātris | Ukraine, Kharkiv | 1917-09-20 | -- | 1917 | 1 | |
| Latviešu teātris | Latviešu teātris | Latvia, ?, ? | 1918-03-13 | -- | 1918 | 1 | |
| Limbažos | Limbažos | Latvia, Limbažos | 1918-08-31 | -- | 1918 | 1 | |
| Landestheater Altenburg | Landestheater Altenburg | Germany, Altenburg, Theaterplatz 19 | 1919-10-05 | -- | 1919–1980 | 6 | |
| Liepājas Jaunajā Teātris | Liepājas Jaunajā Teātris | Latvia, Liepaja | 1920-03-28 | -- | 1920–1935 | 3 | |
| Latvijas Nacionālais teātris | Latvijas Nacionālais teātris | Latvia, Riga, Kronvalda bulvāris 2 | 1921-03-23 | 2011-03-14 | 1921–2010 | 17 | |
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