| Lom Samfunnshus | Lom Samfunnshus | Norway, Lom | 1973-10-01 | -- | 1973–1978 | 2 | |
| Landbruksskolen | Landbruksskolen | Norway, Melsomvik | 1963-01-18 | -- | 1963 | 1 | |
| Little Theatre by the Park, the | The Little Theatre by the Park | England, Chesham, Church Street | 2006-11-29 | 2006-12-02 | 2006 | 1 | |
| L'Ange, Théâtre De | Théâtre De L'Ange | France, Avignon, 15 Rue des Teinturiers | 2018-07-15 | 2018-07-28 | 2018 | 1 | |
| Linsly-Chittenden Hall at Yale University | Linsly-Chittenden Hall at Yale University | United States, New Haven, 55 Whitney Avenue, Suite 400 | 2012-11-12 | -- | 2012 | 1 | |
| Landestheater Allenstein | Landestheater Allenstein | Poland, Allenstein (Olsztyn) | 1926-04-26 | -- | 1926–1938 | 2 | |
| La Ferme de Bel Ebat, Théâtre de Guyancourt | La Ferme de Bel Ebat, Théâtre de Guyancourt | France, Guyancourt, 1, place de Bel Ébat | 2004-01-17 | 2004-01-17 | 2004 | 1 | |
| Lidköping | Lidköping | Sweden, Lidköping | 1936-10-09 | -- | 1936–1993 | 2 | |
| Lorensbergsteatern | Lorensbergsteatern | Sweden, Gothenburg, Berzeliigatan 4 | 1917-03-09 | -- | 1917–1928 | 9 | |
| Laxå | Laxå | Sweden, Laxå | 1992-10- | -- | 1992 | 1 | |
| Lillesand | Lillesand | Norway, Lillesand | 1958-03-12 | -- | 1958–1995 | 3 | |
| Landestheater Altenburg | Landestheater Altenburg | Germany, Altenburg, Theaterplatz 19 | 1919-10-05 | -- | 1919–1980 | 6 | |
| Laboratorio Teatrale Universitario | Laboratorio Teatrale Universitario | Italy, Rome | 1988-05-10 | -- | 1988 | 1 | |
| Lakselv | Lakselv | Norway, Lakselv | 1970-09-02 | -- | 1970–2009 | 4 | |
| Little Theatre, Central Hall, Hillsdale College | Little Theatre, Central Hall, Hillsdale College | United States, Hillsdale, 33 E College St | 1933-12-19 | -- | 1933 | 1 | |
| Lysekil | Lysekil | Sweden, Lysekil | 1989-11-01 | 1989-11-01 | 1989 | 1 | |
| Le Monument-National | Le Monument-National | Canada, Montreal, 1182 St Laurent Blvd | 1996-03-19 | 1996-04-13 | 1996 | 1 | |
| Ludvika | Ludvika | Sweden, Ludvika | 1936-10-02 | 1991-03-08 | 1936–1991 | 3 | |
| Larvik kirke | Larvik kirke | Norway, Larvik | 2016-11-14 | -- | 2016 | 1 | |
| 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 | |
| Latvia | Latvia | Latvia, Latvia | 1923-09-02 | -- | 1923 | 1 | |
| Leitor | Leitor | Spain, Leitor | 2010-12-04 | -- | 2010 | 1 | |
| Länsteatern i Örebro | Länsteatern i Örebro | Sweden, Örebro, Storgatan 1 | 1969-10-29 | 2007-04-29 | 1969–2007 | 5 | |
| Landes-Theater Graz | Landes-Theater Graz | Austria, Graz | 1878-10-16 | 1878-10-29 | 1878 | 1 | |
| Landshut | Landshut | Germany, Landshut | 1893-05-15 | -- | 1893–2000 | 2 | |
| Lilly Hall Studio Theatre | Lilly Hall Studio Theatre | United States, Indianapolis, 4741 Clarendon Rd E Dr | 2019-12-04 | 2019--08 | 2019 | 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 | |
| Lauren Kennedy and Alan Campbell Theatre at Barton College | Lauren Kennedy and Alan Campbell Theatre at Barton College | United States, Wilson, Woodard St NE | 2011-11-10 | 2011-11-13 | 2011 | 1 | |
| Le Hall des Chars | Le Hall des Chars | France, Strasbourg, 10 rue du Hohwald | 2000-02-04 | 2000-02-13 | 2000 | 1 | |
| Løken ungdomsskole | Løken ungdomsskole | Norway, Askim, Askim | 2005-11-07 | -- | 2005 | 1 | |
| Lauertalhalle | Lauertalhalle | Germany, Maßbach, Neue Straße 30 | 2009-12-20 | -- | 2009 | 1 | |
| Larvik | Larvik | Norway, Larvik | 1889-03-22 | 1971-10-05 | 1889–2005 | 15 | |
| Lorna Byrne School | Lorna Byrne School | United States, Cave Junction, 102 S Junction Ave | 2005-12-03 | -- | 2005 | 1 | |
| Live Oak Theater | Live Oak Theater | United States, Berkeley, 1301 Shattuck Ave | 2018-01-05 | 2018-01-27 | 2018 | 1 | |
| Liverpool | Liverpool | England, Liverpool | -- | -- | | | |
| Local Council of Women’s House, The | The Local Council of Women’s House | Canada, Halifax, Nova Scotia | 2013-10-30 | 2013-11-10 | 2013 | 1 | |
| Lyric Theatre | Lyric Theatre | United States, Allentown | 1904-05-13 | 1904-05-13 | 1904 | 1 | |
| Langenthal | Langenthal | Switzerland | 2003-02-11 | -- | 2003 | 1 | |
| Lyttelton Theatre | Lyttelton Theatre | England, London, Upper Ground | 1976-03-17 | 2017-03-21 | 1976–2016 | 5 | |
| Luna Stage | Luna Stage | United States, West Orange, 555 Valley Rd | 2004-11-18 | 2004-12-12 | 2004 | 1 | |
| Lyceum Theatre | Lyceum Theatre | United States, Minneapolis, 82 Eleventh Street | 1892-05-02 | 1928-03-21 | 1892–1928 | 3 | |
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