| Lyric Theatre | Lyric Theatre | Northern Ireland, Belfast, 55 Ridgeway Street | 1972-02-10 | 2003-10-11 | 1972–2003 | 7 | |
| Lieksa | Lieksa | Finland, Lieksa | -- | -- | | | |
| Leningrad | Leningrad | Russia, Leningrad | 1967-06- | -- | 1967–1975 | 2 | |
| Lungomare Garibaldi | Lungomare Garibaldi | Italy, Taranto, Lungomare Vittorio Emanuele III | 2015-09-01 | -- | 2015 | 1 | |
| Little Theater | Little Theater | United States of America, Lexington, Transylvania University, W. 4th Street | 2001-11-01 | 2001-11-10 | 2001 | 1 | |
| Lappeenranta | Lappeenranta | Finland, Lappeenranta | 1973-08-01 | -- | 1973 | 1 | |
| Landestheater Tübingen | Landestheater Tübingen | Germany, Tübingen, Eberhardstraße 6 | 2008-10-10 | 2016-08-26 | 2008–2015 | 3 | |
| Lyngmyr ungdomsskole | Lyngmyr ungdomsskole | Norway, Tvedestrand | 1997-09-04 | 1997-09-06 | 1997 | 1 | |
| Lohjan Teatteri | Lohjan Teatteri | Finland, Lohja, Suurlohjankatu 12 | 1953-- | 1954-- | 1953 | 1 | |
| Landestheater Laibach | Landestheater Laibach | Slovenia, Ljubljana | 1893-12-01 | -- | 1893–1908 | 2 | |
| Lunde 10-årige skole | Lunde 10-årige skole | Norway, Lunde, Nome | 2004-09-09 | -- | 2004–2006 | 2 | |
| Leutkircher Theater | Leutkircher Theater | Germany, Leutkirch im Allgäu | 2011-03-19 | -- | 2011 | 1 | |
| London Theatre, The | The London Theatre | England, London, 443 New Cross Rd | 2014-01-21 | 2014-01-26 | 2014 | 1 | |
| Landestheater Burghofbühne im Kreis Wesel | Landestheater Burghofbühne im Kreis Wesel | Germany, Dinslaken, Luisenstraße 173 | 1991-02-14 | -- | 1991–2016 | 2 | |
| Lyric Opera House | Lyric Opera House | England, Hammersmith, London, King Street | 1958-03-11 | -- | 1958–1959 | 2 | |
| Lindesborgs bygdegård | Lindesborgs bygdegård | Sweden, Malmköping, Lindersborgs bygdegård | 2019-09-29 | 2019-09-29 | 2019 | 1 | |
| Lancaster Grand Theatre | Lancaster Grand Theatre | England, Lancaster, Saint Leonard's Gate, Town Centre | 2014-10-30 | 2014-10-30 | 2014 | 1 | |
| Long Island | Long Island | United States of America, Freeport | 1928-04-14 | -- | 1928 | 1 | |
| Lena, Festiviteten | Festiviteten Lena (Festiviteten) | Norway, Lena | 1952-02-20 | -- | 1952–1961 | 5 | |
| Los Teatros de San Telmo | Los Teatros de San Telmo | Argentina, Buenos Aires, Cochabamba 360 | 1976-08-20 | -- | 1976 | 1 | |
| L'Arc - Scène Nationale le Creusot | L'Arc - Scène Nationale le Creusot | France, Le Creusot, Espace François Mitterrand | 2025-04-10 | -- | 2025 | 1 | |
| Lumbrales | Lumbrales | Spain, Lumbrales | 2006-08-13 | -- | 2006 | 1 | |
| Lessingtheater Wolfenbüttel | Lessingtheater Wolfenbüttel | Germany, Wolfenbüttel, Harztorwall 16 | 1943-09-04 | 1997-10-09 | 1943–1997 | 3 | |
| Le 140 | Le 140 | Belgium, Schaerbeek, Av. Eugène Plasky 140 | 2025-01-09 | -- | 2025 | 1 | |
| LUX | LUX | Netherlands, Nijmegen, Mariënburg 38-39 | 2008-02-28 | 2008-03-22 | 2008 | 2 | |
| Limassol | Limassol | Cyprus, Limassol | 1897-12-20 | 1974-05-16 | 1897–1974 | 3 | |
| Lunde barneskole | Lunde barneskole | Norway, Skien, Skien | 2006-11-20 | -- | 2006 | 1 | |
| Linenhall Arts Centre | Linenhall Arts Centre | Ireland, Castlebar, Linenhall St | 2011-05-19 | -- | 2011 | 1 | |
| Long Island Stage | Long Island Stage | United States of America, Long Island | 1990-02-27 | 1990-03-18 | 1990 | 1 | |
| Landestheater Dinkelsbühl | Landestheater Dinkelsbühl | Germany, Dinkelsbühl, Dr.-Martin-Luther-Straße 10 | 1992-02-19 | -- | 1992 | 1 | |
| Leikfélag Akureyrar | Leikfélag Akureyrar | Iceland, Akureyri, Hafnarstræti 57 | 1993-10-15 | -- | 1993–1998 | 2 | |
| Landdrostei Pinneberg (Gartenhaus) | Landdrostei Pinneberg (Gartenhaus) | Germany, Pinneberg | 2002-09-27 | 2002-09-29 | 2002 | 1 | |
| Loeb Drama Center | Loeb Drama Center | United States of America, Cambridge, 64 Brattle Street | 1961-03-23 | 2005-08-20 | 1961–2005 | 9 | |
| Leipziger Theater - Kammerspiele | Leipziger Theater - Kammerspiele | Germany, Leipzig | 1951-05-18 | -- | 1951–1984 | 3 | |
| La Jonquière, Théâtre de | Théâtre de La Jonquière | France, Paris, 88 Rue de La Jonquière | 2015-09-16 | 2015-09-19 | 2015 | 1 | |
| Landestheater Neustrelitz | Landestheater Neustrelitz | Germany, Neustrelitz, Friedrich-Ludwig-Jahn-Straße 14 | 1922-09-29 | 2014-04-03 | 1922–2013 | 4 | |
| Leidse Schouwburg | Leidse Schouwburg | Netherlands, Leiden , Oude Vest 43 | 1989-03-03 | 1989-04-02 | 1989–2017 | 5 | |
| Lama teatro | Lama teatro | Portugal, Faro, Travessa Castilho 16 | 2022-07-28 | 2022-09-17 | 2022 | 1 | |
| Lillhärdal | Lillhärdal | Sweden, Lillhärdal | 1989-10-06 | 1989-10-06 | 1989 | 1 | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Scranton | 1911-12-27 | 1911-12-27 | 1911 | 1 | |
| Landsberg (Warthe) | Landsberg (Warthe) | Poland, Gorzów Wielkopolski | 1928-03-20 | -- | 1928 | 1 | |
| Linköping | Linköping | Sweden, Linköping | 1880-01-07 | 1880-01-19 | 1880–1936 | 3 | |
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