| Landskrona Teater | Landskrona Teater | Sweden, Landskrona, Östergatan 18 | 1905-04-05 | -- | 1905 | 1 | |
| Lidköping | Lidköping | Sweden, Lidköping | 1936-10-09 | -- | 1936–1993 | 2 | |
| La Maison du Conte | La Maison du Conte | France, Chevilly-Larue, 8 Rue Albert Thuret | 1999-03-26 | 1999-03-28 | 1999 | 1 | |
| Lappeenranta | Lappeenranta | Finland, Lappeenranta | 1973-08-01 | -- | 1973 | 1 | |
| Ludvika | Ludvika | Sweden, Ludvika | 1936-10-02 | 1991-03-08 | 1936–1991 | 3 | |
| Landskrona | Landskrona | Sweden, Landskrona | 1936-10-19 | -- | 1936 | 1 | |
| Lyngmyr ungdomsskole | Lyngmyr ungdomsskole | Norway, Tvedestrand | 1997-09-04 | 1997-09-06 | 1997 | 1 | |
| Landmark Theatre, The | The Landmark Theatre | England, Ilfracombe, Promenade | 2011-05-03 | 2014-11-08 | 2011–2014 | 2 | |
| Liberty Theatre, the | The Liberty Theatre | United States of America, Hailey, 110 N Main St | 2006-02-15 | 2025-02-22 | 2006–2025 | 2 | |
| La Crosse | La Crosse | United States of America, La Crosse | 1903-11-10 | 1903-11-10 | 1903 | 1 | |
| Lyttelton Theatre | Lyttelton Theatre | England, London, Upper Ground | 1976-03-17 | 2017-03-21 | 1976–2016 | 5 | |
| Little Theatre | Little Theatre | United States of America, Chicago | 1914-04-28 | 1914-04-28 | 1914 | 1 | |
| Little Theatre, The | The Little Theatre | United States of America, New Haven, Lincoln Street | 1931-11-12 | 1975-03-02 | 1931–1975 | 2 | |
| Lokremise | Lokremise | Switzerland, St. Gallen, Grünbergstrasse 7 | 2011-11-10 | 2015-05-05 | 2011–2015 | 2 | |
| 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 | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Minneapolis, 82 Eleventh Street | 1892-05-02 | 1928-03-21 | 1892–1928 | 3 | |
| Litchfield Hills Theatre | Litchfield Hills Theatre | United States of America, Litchfield | 1939-08-15 | -- | 1939 | 1 | |
| Landestheater Parchim | Landestheater Parchim | Germany, Parchim, Blutstr. 16 | 1961-02-21 | -- | 1961–1989 | 2 | |
| La Jolla Playhouse | La Jolla Playhouse | United States of America, San Diego | 1987-06-30 | 1987-08-01 | 1987 | 1 | |
| Laurel Tree Theater | Laurel Tree Theater | United States of America, Philadelphia | 2021-03-23 | 2021-04-09 | 2021 | 1 | |
| Lessingtheater Wolfenbüttel | Lessingtheater Wolfenbüttel | Germany, Wolfenbüttel, Harztorwall 16 | 1943-09-04 | 1997-10-09 | 1943–1997 | 3 | |
| Liverpool | Liverpool | England, Liverpool | -- | -- | | | |
| Luzerner Theater | Luzerner Theater | Switzerland, Lucerne, Theaterstrasse 2 | 2017-01-18 | 2023-06-02 | 2017–2023 | 2 | |
| Lunde 10-årige skole | Lunde 10-årige skole | Norway, Lunde, Nome | 2004-09-09 | -- | 2004–2006 | 2 | |
| Langenthal | Langenthal | Switzerland | 2003-02-11 | -- | 2003 | 1 | |
| Lokstallen Otta | Lokstallen Otta | Norway, Otta | 2006-09-15 | 2006-09-17 | 2006 | 1 | |
| Lloyd's Opera House | Lloyd's Opera House | United States of America, North Platte | 1908-06-11 | 1908-06-11 | 1908 | 1 | |
| Lunde barneskole | Lunde barneskole | Norway, Skien, Skien | 2006-11-20 | -- | 2006 | 1 | |
| Luna Stage | Luna Stage | United States of America, West Orange, 555 Valley Rd | 2004-11-18 | 2004-12-12 | 2004 | 1 | |
| Lewis Center for the Arts - Marie and Edward Matthews '53 Acting Studio | Lewis Center for the Arts - Marie and Edward Matthews '53 Acting Studio | United States of America, Princeton, 185 Nassau Street | 2008-02-08 | 2008-02-16 | 2008 | 1 | |
| Limfjord, Kulturcenter | Kulturcenter Limfjord | Denmark, Skive, Skyttevej 12 | 2018-09-24 | -- | 2018 | 1 | |
| Leanor and Alvin Segal Theatre, The | The Leanor and Alvin Segal Theatre | Canada, Montreal, 5170 Chemin de la Côte-Sainte-Catherine | 2006-02-05 | 2006-05-26 | 2006 | 1 | |
| Leschi Trapezikon Ypallilon | Leschi Trapezikon Ypallilon | Greece, Thessaloniki | 1933-02-16 | -- | 1933 | 1 | |
| Landestheater Altenburg | Landestheater Altenburg | Germany, Altenburg, Theaterplatz 19 | 1919-10-05 | -- | 1919–1980 | 6 | |
| Landestheater Niederösterreich | Landestheater Niederösterreich | Austria, St. Pölten, Rathauspl. 11 | 2011-10-15 | 2014-01-29 | 2011–2013 | 2 | |
| Limassol | Limassol | Cyprus, Limassol | 1897-12-20 | 1974-05-16 | 1897–1974 | 3 | |
| Losheim am See | Losheim am See | Germany, Losheim am See | -- | -- | | | |
| Lom Samfunnshus | Lom Samfunnshus | Norway, Lom | 1973-10-01 | -- | 1973–1978 | 2 | |
| Landsberg (Warthe) | Landsberg (Warthe) | Poland, Gorzów Wielkopolski | 1928-03-20 | -- | 1928 | 1 | |
| Lübeck | Lübeck | Germany, Schleswig-Holstein | 1952-02-04 | -- | 1952 | 1 | |
| Lilla Edet | Lilla Edet | Sweden, Lilla Edet | 1989-11-03 | 1989-11-03 | 1989 | 1 | |
| Laboratorio Teatrale Universitario | Laboratorio Teatrale Universitario | Italy, Rome | 1988-05-10 | -- | 1988 | 1 | |
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