| Lloyds storsal | Lloyds storsal | Hungary, Győr | 1928-03-31 | -- | 1928 | 1 | |
| Løken ungdomsskole | Løken ungdomsskole | Norway, Askim, Askim | 2005-11-07 | -- | 2005 | 1 | |
| Lake Pool Park | Lake Pool Park | United States of America, Cleveland | 2011-08-04 | -- | 2011 | 1 | |
| Linköpings Stadsteater | Linköpings Stadsteater | Sweden, Linköping | 1979-08-23 | -- | 1979 | 1 | |
| Lieksa | Lieksa | Finland, Lieksa | -- | -- | | | |
| Little Theater | Little Theater | United States of America, Lexington, Transylvania University, W. 4th Street | 2001-11-01 | 2001-11-10 | 2001 | 1 | |
| Luleå | Luleå | Sweden, Luleå | -- | -- | | | |
| Landestheater Tübingen | Landestheater Tübingen | Germany, Tübingen, Eberhardstraße 6 | 2008-10-10 | 2016-08-26 | 2008–2015 | 3 | |
| Litchfield Hills Theatre | Litchfield Hills Theatre | United States of America, Litchfield | 1939-08-15 | -- | 1939 | 1 | |
| Le Parvis Scène Nationale Tarbes Pyrénées | Le Parvis Scène Nationale Tarbes Pyrénées | France, Ibos, 8 Zoning Industriel | 2005-03-22 | 2015-04-01 | 2005–2018 | 5 | |
| Lighthouse Theatre | Lighthouse Theatre | England, Poole, Dorset, 21 Kingland Rd | 2006-05-23 | 2006-05-27 | 2006 | 1 | |
| Living Room Theatre | Living Room Theatre | United States of America, North Bennington, 1 Park St, VT 05257 | 2021-07-08 | 2021-07-24 | 2021 | 1 | |
| Løgstør | Løgstør | Denmark, Løgstør | 1907-11-04 | -- | 1907 | 1 | |
| Lødingen | Lødingen (Loedingen) | Norway, Lødingen | 1971-03-08 | -- | 1971 | 1 | |
| Lipovăţ | Lipovăţ | Romania, Lipovăţ | -- | -- | | | |
| Logansport | Logansport | United States of America, Logansport | 1903-12-08 | 1903-12-08 | 1903 | 1 | |
| Leipzig, Centraltheater | Centraltheater Leipzig | Germany, Leipzig, Bosestraße 1 04109 Leipzig, Germany | 2008-09-12 | 2013-01-12 | 2008–2012 | 3 | |
| Liskeard School & Community College | Liskeard School & Community College | England, Liskeard, Luxstowe, | 2013-10-22 | 2013-10-23 | 2013 | 1 | |
| Lumbrales | Lumbrales | Spain, Lumbrales | 2006-08-13 | -- | 2006 | 1 | |
| Lorensbergsteatern | Lorensbergsteatern | Sweden, Gothenburg, Berzeliigatan 4 | 1917-03-09 | -- | 1917–1928 | 9 | |
| Lugoj | Lugoj | Romania, Lugoj | 1892-03-21 | -- | 1892–1907 | 2 | |
| Ludgo-Spelviks Bygdegård | Ludgo-Spelviks Bygdegård | Sweden, Nyköping, Ludgo-Spelviks Bygdegård | 2019-10-13 | 2019-10-13 | 2019 | 1 | |
| Landestheater Laibach | Landestheater Laibach | Slovenia, Ljubljana | 1893-12-01 | -- | 1893–1908 | 2 | |
| Lund | Lund | Sweden, Lund | 1872-02-27 | -- | 1872–1936 | 3 | |
| Landestheater Altenburg | Landestheater Altenburg | Germany, Altenburg, Theaterplatz 19 | 1919-10-05 | -- | 1919–1980 | 6 | |
| Lublin | Lublin | Poland, Lublin | 1908-09-15 | -- | 1908–1917 | 3 | |
| Loeb Playhouse, Purdue University | Loeb Playhouse, Purdue University | United States of America, West Lafayette, 175 S University St | 2010-02-25 | -- | 2010 | 1 | |
| Laird Opera House | Laird Opera House | United States of America, Greenville | 1907-09-07 | 1907-09-07 | 1907 | 1 | |
| Little Theatre, Central Hall, Hillsdale College | Little Theatre, Central Hall, Hillsdale College | United States of America, Hillsdale, 33 E College St | 1933-12-19 | -- | 1933 | 1 | |
| Lunde ungdomsskole | Lunde ungdomsskole | Norway, Skien, Lundegata 19 | 1997-09-11 | 2006-01-20 | 1997–2006 | 2 | |
| Landestheater Württemberg-Hohenzollern Tübingen Reutlingen | Landestheater Württemberg-Hohenzollern Tübingen Reutlingen | Germany, Tübingen, Eberhardstr. 6 | 2012-04-14 | 2012-07-12 | 2012 | 1 | |
| Lyric Theatre | Lyric Theatre | United States of America, Portland | 1908-07-07 | 1908-07-07 | 1908 | 1 | |
| Lókal | Lókal | Iceland, Reykjavík | 2010-09-04 | 2010-09-05 | 2010 | 1 | |
| Landor Theatre | Landor Theatre | England, London, 70 Landor Rd, | 2000-04-19 | 2000-05-06 | 2000 | 1 | |
| LUX | LUX | Netherlands, Nijmegen, Mariënburg 38-39 | 2008-02-28 | 2008-03-22 | 2008 | 2 | |
| Länsteatern i Örebro | Länsteatern i Örebro | Sweden, Örebro, Storgatan 1 | 1969-10-29 | 2007-04-29 | 1969–2007 | 5 | |
| Lučenec | Lučenec | Slovak Republic, Lučenec | 1912-10-08 | 1912-11-22 | 1912–1939 | 4 | |
| Landschaftliches Theater in Linz | Landschaftliches Theater in Linz | Austria, Linz | 1878-11-13 | 1913-12-03 | 1878–1920 | 29 | |
| L'Espal | L'Espal | France, Le Mans, 60 Rue de l'Estérel | 2013-12-03 | 2014-02-26 | 2013–2014 | 2 | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Scranton | 1911-12-27 | 1911-12-27 | 1911 | 1 | |
| Loft Theatre - Main House, The | The Loft Theatre - Main House | England, Leamington Spa, Victoria Terrace, Town Centre | 2007-10-17 | 2018-04-07 | 2007–2018 | 2 | |
| Lancaster Grand Theatre | Lancaster Grand Theatre | England, Lancaster, Saint Leonard's Gate, Town Centre | 2014-10-30 | 2014-10-30 | 2014 | 1 | |
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