| Lorensbergsteatern | Lorensbergsteatern | Sweden, Gothenburg, Berzeliigatan 4 | 1917-03-09 | -- | 1917–1928 | 9 | |
| Landestheater Altenburg | Landestheater Altenburg | Germany, Altenburg, Theaterplatz 19 | 1919-10-05 | -- | 1919–1980 | 6 | |
| Landestheater Allenstein | Landestheater Allenstein | Poland, Allenstein (Olsztyn) | 1926-04-26 | -- | 1926–1938 | 2 | |
| Lysekil | Lysekil | Sweden, Lysekil | 1989-11-01 | 1989-11-01 | 1989 | 1 | |
| Little Theatre, Central Hall, Hillsdale College | Little Theatre, Central Hall, Hillsdale College | United States, Hillsdale, 33 E College St | 1933-12-19 | -- | 1933 | 1 | |
| Ludvika | Ludvika | Sweden, Ludvika | 1936-10-02 | 1991-03-08 | 1936–1991 | 3 | |
| Lead Opera House | Lead Opera House | United States, Lead | 1905-03-25 | 1905-03-25 | 1905 | 1 | |
| Landmark Theatre, The | The Landmark Theatre | England, Ilfracombe, Promenade | 2011-05-03 | 2014-11-08 | 2011–2014 | 2 | |
| Linköping | Linköping | Sweden, Linköping | 1880-01-07 | 1880-01-19 | 1880–1936 | 3 | |
| Landschaftliches Theater in Linz | Landschaftliches Theater in Linz | Austria, Linz | 1878-11-13 | 1913-12-03 | 1878–1920 | 29 | |
| Lødingen | Lødingen skole (Loedingen) | Norway, Lødingen | 1968-09-10 | -- | 1968–1983 | 4 | |
| Law Center for the Arts, West Virginia Wesleyan | Law Center for the Arts, West Virginia Wesleyan | United States, Buckhannon, 59 College Avenue | 2009-11-11 | -- | 2009 | 1 | |
| Lafayette | Lafayette | United States, Lafayette | 1903-10-16 | 1903-10-16 | 1903 | 1 | |
| Lunde ungdomsskole | Lunde ungdomsskole | Norway, Skien, Lundegata 19 | 1997-09-11 | 2006-01-20 | 1997–2006 | 2 | |
| Lloyd Theater, Fine Arts Building | Lloyd Theater, Fine Arts Building | United States, Lynchburg, 1971 University Blvd | 2009-03-20 | 2009-03-28 | 2009 | 1 | |
| Litlabø | Litlabø | Norway, Stord | 1958-03-03 | -- | 1958 | 1 | |
| Länsteatern i Örebro | Länsteatern i Örebro | Sweden, Örebro, Storgatan 1 | 1969-10-29 | 2007-04-29 | 1969–2007 | 5 | |
| Lugo, Teatro | Teatro Lugo | Italy, Lugo, Piazza Cavour, 17 | 2017-01-13 | 2017-01-15 | 2017 | 1 | |
| Langesund ungdomsskole | Langesund ungdomsskole | Norway, Langesund | 2004-10-28 | 2004-10-29 | 2004 | 1 | |
| Lippisches Landestheater | Lippisches Landestheater | Germany, Detmold | 1925-08-25 | 1931-03-11 | 1925–1934 | 3 | |
| Lyriko Theatro | Lyriko Theatro | Greece, Patra | 1933-06-21 | -- | 1933–1949 | 3 | |
| 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 | |
| Lorna Byrne School | Lorna Byrne School | United States, Cave Junction, 102 S Junction Ave | 2005-12-03 | -- | 2005 | 1 | |
| Larvik | Larvik | Norway, Larvik | 1889-03-22 | 1971-10-05 | 1889–2005 | 15 | |
| Liverpool | Liverpool | England, Liverpool | -- | -- | | | |
| Lyric Theatre | Lyric Theatre | United States, Allentown | 1904-05-13 | 1904-05-13 | 1904 | 1 | |
| Langenthal | Langenthal | Switzerland | 2003-02-11 | -- | 2003 | 1 | |
| Lysvenskij dramteatr | Lysvenskij dramteatr | Russia, Lysva | 1941-- | -- | 1941 | 1 | |
| Laxmi Narayan Temple Complex | Laxmi Narayan Temple Complex | India, Mumbai, Marve Road | 2017-04-02 | 2017-04-02 | 2017 | 1 | |
| Lost Theatre | Lost Theatre | England, London, Vauxhall, 208 Wandsworth Road | 2010-07-27 | 2010-11-11 | 2010 | 2 | |
| Lillestrøm | Lillestrøm | Norway, Lillestrøm | 1928-03-23 | -- | 1928 | 1 | |
| LOFFT | LOFFT | Germany, Leipzig, Lindenauer Markt 21 | 2012-03-22 | -- | 2012 | 1 | |
| Larrañaga | Larrañaga | Uruguay, Salto | 1973-08-04 | -- | 1973 | 1 | |
| Leuven | Leuven | Belgium, Leuven | 1997-12-04 | 1997-12-05 | 1997–2006 | 2 | |
| Long Island | Long Island | United States, Freeport | 1928-04-14 | -- | 1928 | 1 | |
| Landbruksskolen | Landbruksskolen | Norway, Melsomvik | 1963-01-18 | -- | 1963 | 1 | |
| Lucernaire Theater | Lucernaire Theater | France, Paris, 53 Rue Notre Dame des Champs | 2016-12-07 | 2017-01-21 | 2016 | 1 | |
| Lødingen, Samfunnshuset | Samfunnshuset Lødingen (Loedingen) | Norway, Lødingen, Lødingen | 2009-09-03 | -- | 2009 | 1 | |
| La Coupole (Sénart) | La Coupole (Sénart) | France, Combs-la-Ville, 107 Rue Jean François Millet | 1999-03-12 | 1999-03-13 | 1999 | 1 | |
| Lillesand Teater | Lillesand Teater | Norway, Lillesand, Børge Trulssøns gate 7 | 1963-03-15 | -- | 1963–1997 | 6 | |
| Lalmonirhat Zila Parishad Auditorium | Lalmonirhat Zila Parishad Auditorium | Bangladesh, Lalmonirhat | 2006-04-25 | 2006-04-26 | 2006 | 1 | |
| Losheim am See | Losheim am See | Germany, Losheim am See | -- | -- | | | |
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