| London | London | England, London | 1923-12-03 | -- | 1923–1985 | 3 | |
| Little Theatre, The | The Little Theatre | England, London | 1911-03-28 | -- | 1911–1935 | 2 | |
| Liverpool Playhouse | Liverpool Playhouse | England, Liverpool, Williamson Square | 1928-03-24 | 2006-04-15 | 1928–2006 | 4 | |
| LIPA - Sennheiser Studio Theatre | LIPA - Sennheiser Studio Theatre | England, Liverpool, Pilgrim st / Mount st | 2009-05-14 | 2009-05-14 | 2009 | 1 | |
| Liverpool | Liverpool | England, Liverpool | -- | -- | | | |
| Liskeard School & Community College | Liskeard School & Community College | England, Liskeard, Luxstowe, | 2013-10-22 | 2013-10-23 | 2013 | 1 | |
| Lichfield Garrick Theatre | Lichfield Garrick Theatre | England, Lichfield, Castle Dyke | 1901-05-13 | 2010-02-13 | 1901–2010 | 3 | |
| Leicester Haymarket Theatre | Leicester Haymarket Theatre | England, Leicester, Belgrave Gate | 1975-10-22 | 2000-10-07 | 1975–2000 | 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 | |
| Lancaster Grand Theatre | Lancaster Grand Theatre | England, Lancaster, Saint Leonard's Gate, Town Centre | 2014-10-30 | 2014-10-30 | 2014 | 1 | |
| Landmark Theatre, The | The Landmark Theatre | England, Ilfracombe, Promenade | 2011-05-03 | 2014-11-08 | 2011–2014 | 2 | |
| Lawrence Batley Theatre | Lawrence Batley Theatre | England, Huddersfield, Queen St | 2005-05-04 | 2011-06-22 | 2005–2011 | 2 | |
| Little Theatre, the | The Little Theatre | England, Hertford, Balfour St | 2005-11-10 | 2005-11-17 | 2005 | 1 | |
| Lyric Opera House | Lyric Opera House | England, Hammersmith, London, King Street | 1958-03-11 | -- | 1958–1959 | 2 | |
| Little Theatre Torquay | Little Theatre Torquay | England, Devon | 2008-06-03 | -- | 2008 | 1 | |
| Lyceum Theatre | Lyceum Theatre | England, Crewe, Cheshire, Heath Street | 1996-02-14 | 1999-10-09 | 1996–1999 | 2 | |
| Lakeside Theatre | Lakeside Theatre | England, Colchester, Essex, Wivenhoe Park, University of Essex Colchester Campus | 2005-02-23 | 2014-11-12 | 2005–2018 | 3 | |
| Lyric Theatre Hammersmith | Lyric Theatre Hammersmith | England, Chiswick, London, Kings Street | 1953-09-08 | 2020-05-20 | 1953–2020 | 8 | |
| Little Theatre by the Park, the | The Little Theatre by the Park | England, Chesham, Church Street | 2006-11-29 | 2006-12-02 | 2006 | 1 | |
| Limfjord, Kulturcenter | Kulturcenter Limfjord | Denmark, Skive, Skyttevej 12 | 2018-09-24 | -- | 2018 | 1 | |
| Løgstør | Løgstør | Denmark, Løgstør | 1907-11-04 | -- | 1907 | 1 | |
| Lemvig Theater | Lemvig Theater | Denmark, Lemvig | 1880-05-22 | -- | 1880–2018 | 5 | |
| Langelands Teater | Langelands Teater | Denmark, Langelands | 1909-11-01 | -- | 1909 | 2 | |
| Lyngby kulturhus | Lyngby kulturhus | Denmark, 2800 Kgs. Lyngby, Klampenborgvej 215 B | 2002-11-08 | -- | 2002–2006 | 3 | |
| Loutkové divadlo Radost | Loutkové divadlo Radost | Czech Republic, Brno | 1985-04-26 | -- | 1985 | 1 | |
| Lefkosias, Dimotiko Theatre | Dimotiko Theatre Lefkosias | Cyprus, Nikosia, Leoforos Mouseiou, 1a | 1974-05-01 | 2008-05-31 | 1974–2008 | 3 | |
| Limassol | Limassol | Cyprus, Limassol | 1897-12-20 | 1974-05-16 | 1897–1974 | 3 | |
| Larnaca Municipal Theatre | Larnaca Municipal Theatre | Cyprus, Larnaca | 2017-11-11 | 2017-12-20 | 2017 | 1 | |
| Larnaca | Larnaca | Cyprus, Larnaca | 1973-02-27 | 1974-05-31 | 1973–1974 | 2 | |
| Lanxin Theater | Lanxin Theater | China, Shanghai, 57 Maoming S Rd, Huangpu District | 2006-06-23 | 2006-06-25 | 2006 | 1 | |
| Loke Yew Hall | Loke Yew Hall | China, Hong Kong, Pok Fu Lam Rd | 1960-04-21 | 1960-04-23 | 1960 | 1 | |
| Liceo San José Lo Barnechea | Liceo San José Lo Barnechea | Chile, Santiago, Lo Barnechea | 2013-05- | -- | 2013 | 1 | |
| La Salita | La Salita | Chile, Santiago | 1990-12-08 | -- | 1990 | 1 | |
| Liceo Bicentenario Puente Alto | Liceo Bicentenario Puente Alto | Chile, Puente Alto, Claudio Matte 179, | 2011-09- | -- | 2011 | 1 | |
| Lower Denton Theatre | Lower Denton Theatre | Canada, Wolfville, 15 University Ave | 2018-03-22 | 2018-03-31 | 2018 | 1 | |
| Little Fernwood Hall | Little Fernwood Hall | Canada, Victoria | 2010-06-08 | 2010-06-26 | 2010 | 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 | |
| Le Monument-National | Le Monument-National | Canada, Montreal, 1182 St Laurent Blvd | 1996-03-19 | 1996-04-13 | 1996 | 1 | |
| 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 | |
| Liége | Liége | Belgium, Liége | 1895-05-18 | -- | 1895 | 1 | |
| Leuven | Leuven | Belgium, Leuven | 1997-12-04 | 1997-12-05 | 1997–2006 | 2 | |
| Limelight | Cultuurhuis Limelight | Belgium, Kortrijk, Jan Persynstraat 6 | 1995-04-01 | -- | 1995 | 1 | |
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