| Lindesberg | Lindesberg | Sweden, Lindesberg | 1936-10-26 | -- | 1936–2002 | 3 | |
| Laboratorio Teatrale Universitario | Laboratorio Teatrale Universitario | Italy, Rome | 1988-05-10 | -- | 1988 | 1 | |
| Landestheater Linz (Kammerspiele) | Landestheater Linz (Kammerspiele) | Austria, Linz, Promenade 39 | 1950-- | 2017-06-02 | 1950–2017 | 16 | |
| Löwenarena Sommeri | Löwenarena Sommeri | Switzerland, Sommeri | 1989-03-18 | -- | 1989 | 1 | |
| Lisbon | Lisbon | Portugal, Lisbon | 1947-04-05 | 2002-03-23 | 1947–2006 | 4 | |
| Levice | Levice | Slovak Republic, Levice | 1890-09-06 | -- | 1890–1942 | 5 | |
| Lycée de Thiaroye | Lycée de Thiaroye | Senegal, Thiaroye | 2021-05-08 | -- | 2021 | 1 | |
| Lyngdal kulturhus | Lyngdal kulturhus | Norway, Lyngdal, Grøndokka 4 | 2015-09-18 | 2020-09-04 | 2015–2020 | 2 | |
| Lokremise | Lokremise | Switzerland, St. Gallen, Grünbergstrasse 7 | 2011-11-10 | 2015-05-05 | 2011–2015 | 2 | |
| Landestheater Oldenburg | Landestheater Oldenburg | Germany, Oldenburg | 1925-04-02 | -- | 1925–1934 | 2 | |
| Lawrence Batley Theatre | Lawrence Batley Theatre | England, Huddersfield, Queen St | 2005-05-04 | 2011-06-22 | 2005–2011 | 2 | |
| Liepājas Jaunajā Teātris | Liepājas Jaunajā Teātris | Latvia, Liepaja | 1920-03-28 | -- | 1920–1935 | 3 | |
| La Maison du Conte | La Maison du Conte | France, Chevilly-Larue, 8 Rue Albert Thuret | 1999-03-26 | 1999-03-28 | 1999 | 1 | |
| Little Theatre | Little Theatre | United States of America, Cincinnati | 1913-- | 1913-- | 1913 | 1 | |
| Leipzig | Leipzig | Germany, Leipzig | -- | -- | | | |
| Länsmuseet Murberget | Länsmuseet Murberget | Sweden, Harnosand, Murbergsvägen 31 | 1999-10-08 | -- | 1999 | 1 | |
| Le Monument-National | Le Monument-National | Canada, Montreal, 1182 St Laurent Blvd | 1996-03-19 | 1996-04-13 | 1996 | 1 | |
| Le Hall des Chars | Le Hall des Chars | France, Strasbourg, 10 rue du Hohwald | 2000-02-04 | 2000-02-13 | 2000 | 1 | |
| Luton Library Theatre | Luton Library Theatre | England, Luton, Bridge St | 1985-01-30 | 1993-10-02 | 1985–1993 | 2 | |
| Liepājas Tautas Teātris | Liepājas Tautas Teātris | Latvia, Liepaja, Rožu laukums 5/6 | 1908-04-15 | -- | 1908–1974 | 3 | |
| Live Oak Theater | Live Oak Theater | United States of America, Berkeley, 1301 Shattuck Ave | 2018-01-05 | 2018-01-27 | 2018 | 1 | |
| Lillehammer | Lillehammer | Norway, Lillehammer | 1902-06-19 | 2021-02-18 | 1902–2021 | 12 | |
| Luna, la | La Luna | France, Maubeuge, Avenue Jean Jaurès | 1996-03-22 | 1999-03-20 | 1996–1999 | 2 | |
| Litteraturhuset | Litteraturhuset | Norway, Oslo, Wergelandsveien 29 | 2023-04-14 | 2023-04-04 | 2023 | 1 | |
| Landestheater Parchim | Landestheater Parchim | Germany, Parchim, Blutstr. 16 | 1961-02-21 | -- | 1961–1989 | 2 | |
| Liepājas Latviešu teātris | Liepājas Latviešu teātris | Latvia, Liepāja, Teātra 4 | 1907-11-04 | 1908-04-23 | 1907–1915 | 11 | |
| Lubuski Teatr im. Leona Kruczkowskiego | Lubuski Teatr im. Leona Kruczkowskiego | Poland, Zielona Góra, aleja Niepodległości 3/5 | 2006-06-10 | 2006-11-21 | 2006 | 1 | |
| Lødingen | Lødingen skole (Loedingen) | Norway, Lødingen | 1968-09-10 | -- | 1968–1983 | 4 | |
| Load of Fun | Load of Fun | United States of America, Baltimore, 120 W North Ave | 2009-04-30 | 2009-05-24 | 2009 | 1 | |
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