| Lyceum | Lyceum | United States of America, Scranton | 1907-03-25 | 1907-03-25 | 1907 | 1 | |
| Lyceum | Lyceum | United States of America, Rochester | 1903-04-03 | 1903-04-04 | 1903 | 1 | |
| Lycée de Thiaroye | Lycée de Thiaroye | Senegal, Thiaroye | 2021-05-08 | -- | 2021 | 1 | |
| Lycée Cheick Omar Tall Nafoore | Lycée Cheick Omar Tall Nafoore | Senegal, Dakar | 2021-05-06 | -- | 2021 | 1 | |
| Lycée Billes | Lycée Billes | Senegal, Rufisque | 2021-05-26 | -- | 2021 | 1 | |
| Lübeck | Lübeck | Germany, Schleswig-Holstein | 1952-02-04 | -- | 1952 | 1 | |
| Lwowski Teatr Ludowy | Lwowski Teatr Ludowy | Poland, Tarnów | 1906-10-01 | -- | 1906 | 1 | |
| Luzerner Theater | Luzerner Theater | Switzerland, Lucerne, Theaterstrasse 2 | 2017-01-18 | 2023-06-02 | 2017–2023 | 2 | |
| Lux Radio Theatre | Lux Radio Theatre | United States of America, Los Angelos, 1615 North Vine Street | 1938-06-06 | -- | 1938 | 1 | |
| LUX | LUX | Netherlands, Nijmegen, Mariënburg 38-39 | 2008-02-28 | 2008-03-22 | 2008 | 2 | |
| Luton Library Theatre | Luton Library Theatre | England, Luton, Bridge St | 1985-01-30 | 1993-10-02 | 1985–1993 | 2 | |
| Luther College | Luther College | United States of America, Decorah, 700 College Drive | 2001-02-02 | 2001-02-04 | 2001–2011 | 2 | |
| Lusaka Playhouse | Lusaka Playhouse | Zambia, Lusaka, cnr Church and Nasser Rds | 2006-12-14 | 2006-12-15 | 2006–2010 | 3 | |
| Lunds Stadsteater | Lunds Stadsteater | Sweden, Lund, Kiliansgatan 13 | 1978-11-30 | 2000-11-11 | 1978–2010 | 3 | |
| Lunde ungdomsskole | Lunde ungdomsskole | Norway, Skien, Lundegata 19 | 1997-09-11 | 2006-01-20 | 1997–2006 | 2 | |
| Lunde barneskole | Lunde barneskole | Norway, Skien, Skien | 2006-11-20 | -- | 2006 | 1 | |
| Lunde 10-årige skole | Lunde 10-årige skole | Norway, Lunde, Nome | 2004-09-09 | -- | 2004–2006 | 2 | |
| Lund | Lund | Sweden, Lund | 1872-02-27 | -- | 1872–1936 | 3 | |
| Luna, la | La Luna | France, Maubeuge, Avenue Jean Jaurès | 1996-03-22 | 1999-03-20 | 1996–1999 | 2 | |
| Luna Stage | Luna Stage | United States of America, West Orange, 555 Valley Rd | 2004-11-18 | 2004-12-12 | 2004 | 1 | |
| Luna Playhouse | Luna Playhouse | United States of America, Glendale, 3706 San Fernando Road | 2007-12-07 | 2008-01-20 | 2007 | 1 | |
| Lumbrales | Lumbrales | Spain, Lumbrales | 2006-08-13 | -- | 2006 | 1 | |
| Luleå | Luleå | Sweden, Luleå | -- | -- | | | |
| Luisenpark | Luisenpark | Germany, Magdeburg, Spielgartenstrasse 1 | 1895-06-15 | -- | 1895 | 1 | |
| Lugoj | Lugoj | Romania, Lugoj | 1892-03-21 | -- | 1892–1907 | 2 | |
| Luella Theatre | Luella Theatre | United States of America, Chillicothe | 1908-02-04 | 1908-02-04 | 1908 | 1 | |
| Ludvika | Ludvika | Sweden, Ludvika | 1936-10-02 | 1991-03-08 | 1936–1991 | 3 | |
| Ludgo-Spelviks Bygdegård | Ludgo-Spelviks Bygdegård | Sweden, Nyköping, Ludgo-Spelviks Bygdegård | 2019-10-13 | 2019-10-13 | 2019 | 1 | |
| Lucernaire, Théâtre du | Théâtre du Lucernaire | France, Paris, 53 rue Notre Dame des Champs | 2016-12-07 | 2017-03-12 | 2016 | 1 | |
| Lučenec | Lučenec | Slovak Republic, Lučenec | 1912-10-08 | 1912-11-22 | 1912–1939 | 4 | |
| 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 | |
| Lublin | Lublin | Poland, Lublin | 1908-09-15 | -- | 1908–1917 | 3 | |
| LPSR Akadēmiskais Raiņa Dailes teātris | Latvijas PSR Valsts Akadēmiskais Raiņa Dailes teātris | Latvia, Riga, Lāčplēša ielā 25 | 1964-03-07 | -- | 1964–1975 | 2 | |
| Loyola Community Theater | Loyola Community Theater | United States of America, Chicago | 1949-03-05 | 1949-03-06 | 1949 | 1 | |
| Lowry Centre | Lowry Centre | England, Salford Quays, Pier 8 | 2000-10-24 | 2019-10-19 | 2000–2019 | 6 | |
| Lower Glasshouse Theatre | Lower Glasshouse Theatre | England, Stourbridge, Wollaston Rd | 2005-06-17 | 2005-07-24 | 2005 | 1 | |
| Lower Denton Theatre | Lower Denton Theatre | Canada, Wolfville, 15 University Ave | 2018-03-22 | 2018-03-31 | 2018 | 1 | |
| Loutkové divadlo Radost | Loutkové divadlo Radost | Czech Republic, Brno | 1985-04-26 | -- | 1985 | 1 | |
| Lounge Theatre , The | The Lounge Theatre | United States of America, Los Angeles, 6201 Santa Monica Blvd | 2013-02-10 | 2018-10-07 | 2013–2018 | 2 | |
| Loughborough Town Hall Theatre | Loughborough Town Hall Theatre | England, Loughborough, Leicestershire, Market Place | 2014-10-21 | 2014-10-21 | 2014 | 1 | |
| Lost Theatre | Lost Theatre | England, London, Vauxhall, 208 Wandsworth Road | 2010-07-27 | 2010-11-11 | 2010 | 2 | |
| Losheim am See | Losheim am See | Germany, Losheim am See | -- | -- | | | |
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