| Ladugårdslands-Teatern | Ladugårdslands-Teatern | Sweden, Stockholm, Östermalmstorg | 1877-01-31 | -- | 1877 | 1 | |
| Lučenec | Lučenec | Slovak Republic, Lučenec | 1912-10-08 | 1912-11-22 | 1912–1939 | 4 | |
| Lardal ungdomsskole | Lardal ungdomsskole | Norway, Svarstad, Lågaveien 26 | 2007-05-31 | -- | 2007 | 1 | |
| Lilly Hall Studio Theatre | Lilly Hall Studio Theatre | United States of America, Indianapolis, 4741 Clarendon Rd E Dr | 2019-12-04 | 2019--08 | 2019 | 1 | |
| Laxå | Laxå | Sweden, Laxå | 1992-10- | -- | 1992 | 1 | |
| Landesbühnen Sachsen | Landesbühnen Sachsen | Germany, Radebeul, Meißner Straße 152 | 1981-01-17 | -- | 1981 | 1 | |
| Lüdenscheid, Kulturhaus | Kulturhaus Lüdenscheid | Germany, Lüdenscheid, Freiherr-vom-Stein-Straße 9 | 2017-01-11 | -- | 2017 | 1 | |
| Lincoln Park | Lincoln Park | United States of America, Cleveland | 2011-08-05 | -- | 2011 | 1 | |
| LUX | LUX | Netherlands, Nijmegen, Mariënburg 38-39 | 2008-02-28 | 2008-03-22 | 2008 | 2 | |
| Lillhärdal | Lillhärdal | Sweden, Lillhärdal | 1989-10-06 | 1989-10-06 | 1989 | 1 | |
| Lenfilm | Lenfilm | Russia, St. Petersburg | 2017-10-31 | 2017-10-31 | 2017 | 1 | |
| Lüdinghausen | Lüdinghausen | Germany, Lüdinghausen | -- | -- | | | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Scranton | 1911-12-27 | 1911-12-27 | 1911 | 1 | |
| Landestheater Burghofbühne im Kreis Wesel | Landestheater Burghofbühne im Kreis Wesel | Germany, Dinslaken, Luisenstraße 173 | 1991-02-14 | -- | 1991–2016 | 2 | |
| Lobe-Theater | Lobe-Theater | Poland, Wrocław (Breslau) | 1897-03-06 | 1923-12-09 | 1897–1923 | 16 | |
| Latvia | Latvia | Latvia, Latvia | 1923-09-02 | -- | 1923 | 1 | |
| Landestheater Eisenach | Landestheater Eisenach | Germany, Eisenach, Theaterplatz 7 | 1992-02-16 | 2001-06-22 | 1992–2001 | 2 | |
| Lancaster Grand Theatre | Lancaster Grand Theatre | England, Lancaster, Saint Leonard's Gate, Town Centre | 2014-10-30 | 2014-10-30 | 2014 | 1 | |
| Little Theatre, The | The Little Theatre | England, London | 1911-03-28 | -- | 1911–1935 | 2 | |
| Lys-Montparnasse, Théâtre du | Théâtre du Lys-Montparnasse | France, Paris, 15, rue du Maine | 1985-01-16 | 1985-01-24 | 1985 | 1 | |
| Landes-Theater Graz | Landes-Theater Graz | Austria, Graz | 1878-10-16 | 1878-10-29 | 1878 | 1 | |
| Latvijas Nacionālais teātris | Latvijas Nacionālais teātris | Latvia, Riga, Kronvalda bulvāris 2 | 1921-03-23 | 2011-03-14 | 1921–2010 | 17 | |
| Le point d’eau | Le point d’eau | France, Ostwald, 17 Allée René Cassin | 1999-10-16 | -- | 1999 | 1 | |
| Lunds Stadsteater | Lunds Stadsteater | Sweden, Lund, Kiliansgatan 13 | 1978-11-30 | 2000-11-11 | 1978–2010 | 3 | |
| Little Theatre, the | The Little Theatre | England, Hertford, Balfour St | 2005-11-10 | 2005-11-17 | 2005 | 1 | |
| Lyceum | Lyceum | United States of America, Rochester | 1903-04-03 | 1903-04-04 | 1903 | 1 | |
| Landesbühne Rhein-Main | Landesbühne Rhein-Main | Germany, Frankfurt am Main | 1957-01-16 | -- | 1957 | 1 | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Harrisburg | 1904-05-12 | 1908-03-28 | 1904–1907 | 2 | |
| Landestheater Dinkelsbühl | Landestheater Dinkelsbühl | Germany, Dinkelsbühl, Dr.-Martin-Luther-Straße 10 | 1992-02-19 | -- | 1992 | 1 | |
| Lyric Theatre | Lyric Theatre | United States of America, New York, 213 West 42nd Street | 1904-04-15 | 1908-05-13 | 1904–1911 | 5 | |
| Lyttelton Theatre | Lyttelton Theatre | England, London, Upper Ground | 1976-03-17 | 2017-03-21 | 1976–2016 | 5 | |
| Lipeckij gosudarstvennyj akademiceskij teatr dramy imeni L.N | Lipeckij gosudarstvennyj akademiceskij teatr dramy imeni L.N | Russia, Lipeck | 1999-02-06 | -- | 1999 | 1 | |
| Landdrostei Pinneberg (Gartenhaus) | Landdrostei Pinneberg (Gartenhaus) | Germany, Pinneberg | 2002-09-27 | 2002-09-29 | 2002 | 1 | |
| Lhuca | Lhuca | United States of America, Lubbock, 511 Avenue K Lubbock, TX | 2022-09-16 | 2022-09-23 | 2022 | 1 | |
| Lloyd Theater, Fine Arts Building | Lloyd Theater, Fine Arts Building | United States of America, Lynchburg, 1971 University Blvd | 2009-03-20 | 2009-03-28 | 2009 | 1 | |
| Little Theatre | Little Theatre | Australia, Adelaide, The Cloisters, The University of Adelaide | 1984-09-12 | 1986-10-11 | 1984–1986 | 2 | |
| La Filature | La Filature | France, Mulhouse, 20 Allée Nathan Katz | 2005-02-25 | 2021-10-17 | 2005–2021 | 3 | |
| Lac de la Triouzoune | Neuvic - Lac de la Triouzoune | France | 2023-07-21 | 2023-07-21 | 2023 | 2 | |
| La Jolla Playhouse | La Jolla Playhouse | United States of America, San Diego | 1987-06-30 | 1987-08-01 | 1987 | 1 | |
| London | London | England, London | 1923-12-03 | -- | 1923–1985 | 3 | |
| Loyola Community Theater | Loyola Community Theater | United States of America, Chicago | 1949-03-05 | 1949-03-06 | 1949 | 1 | |
| Landestheater Linz (Arena Schauspielhaus) | Landestheater Linz (Arena Schauspielhaus) | Austria, Linz, Promenade 39 | 2015-03-27 | -- | 2015 | 1 | |
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