| Lillestrøm | Lillestrøm | Norway, Lillestrøm | 1928-03-23 | -- | 1928 | 1 | |
| Los Angeles Theatre | Los Angeles Theatre | United States, Los Angeles | 1908-04-04 | 1908-04-04 | 1908 | 1 | |
| La Filature | La Filature | France, Mulhouse, 20 Allée Nathan Katz | 2005-02-25 | 2021-10-17 | 2005–2021 | 3 | |
| Lippisches Landestheater | Lippisches Landestheater | Germany, Detmold | 1925-08-25 | 1931-03-11 | 1925–1934 | 3 | |
| Lys-Montparnasse, Théâtre du | Théâtre du Lys-Montparnasse | France, Paris, 15, rue du Maine | 1985-01-16 | 1985-01-24 | 1985 | 1 | |
| Ladugårdslands-Teatern | Ladugårdslands-Teatern | Sweden, Stockholm, Östermalmstorg | 1877-01-31 | -- | 1877 | 1 | |
| Lobe-Theater | Lobe-Theater | Poland, Wrocław (Breslau) | 1897-03-06 | 1923-12-09 | 1897–1923 | 16 | |
| Landestheater Schwaben | Landestheater Schwaben | Germany, Memmingen, Theaterplatz 2 | 1976-09-27 | 2017-04-08 | 1976–2016 | 6 | |
| Leverkusen | Leverkusen | Germany, Leverkusen | 1977-09-20 | -- | 1977 | 1 | |
| Little Theatre, Muskingum College | Little Theatre, Muskingum College | United States, New Concord, 163 Stormont St | 1963-12-11 | 1963-12-14 | 1963 | 1 | |
| Little Theatre, The | The Little Theatre | England, London | 1911-03-28 | -- | 1911–1935 | 2 | |
| Leiden | Leiden | Netherlands, Leiden | 2002-06-17 | 2002-06-18 | 2002 | 1 | |
| Limelight Theatre | Limelight Theatre | United States, St. Augustine, 11 Old Mission Avenue | 2019-01-11 | 2019-02-03 | 2019 | 1 | |
| Library Theatre | Library Theatre | England, Manchester, Central Library, St Peter's Square | 1996-03-19 | 1996-03-23 | 1996 | 1 | |
| La Crosse State Teachers College | La Crosse State Teachers College | United States, La Crosse | 1935-11-23 | -- | 1935 | 1 | |
| Long Island | Long Island | United States, Freeport | 1928-04-14 | -- | 1928 | 1 | |
| Loeb Drama Center | Loeb Drama Center | United States, Cambridge, 64 Brattle Street | 1961-03-23 | 2005-08-20 | 1961–2005 | 9 | |
| Lyric Theatre | Lyric Theatre | United States, New York, 213 West 42nd Street | 1904-04-15 | 1908-05-13 | 1904–1911 | 5 | |
| Landesbühne Sachsen-Anhalt Lutherstadt Eisleben | Landesbühne Sachsen-Anhalt Lutherstadt Eisleben | Germany, Lutherstadt Eisleben, Landwehr 5 | 2001-10-06 | 2003-04-01 | 2001–2009 | 2 | |
| Los Angeles Actors' Theatre | Los Angeles Actors' Theatre | United States, Los Angeles | 1983-10-01 | -- | 1983 | 1 | |
| LAVA de Valladolid | LAVA de Valladolid | Spain, Valladolid, Paseo de Zorrilla, 101 | 2016-03-05 | -- | 2016 | 1 | |
| Little Theatre | Little Theatre | Ireland, Dublin, R127, Townparks, Skerries | 1912-05-17 | 1913-12-09 | 1912–1913 | 3 | |
| Landestheater Schneidemühl | Landestheater Schneidemühl | Poland, Schneidemühl / Piła | 1927-01-18 | -- | 1927–1938 | 3 | |
| Leighton House Museum | Leighton House Museum | England, London, 12 Holland Park Road, Holland Park, | 2014-04-01 | 2014-04-02 | 2014 | 1 | |
| Laerdal | Lærdal (Laerdal) | Norway, Lærdal | 1970-01-31 | -- | 1970–1975 | 3 | |
| Little Theatre | Little Theatre | United States, Cincinnati | 1913-- | 1913-- | 1913 | 1 | |
| Laurie Theater ved Brandeis University | Laurie Theater ved Brandeis University | United States, Waltham | 1968-06-21 | 1968-06-22 | 1968 | 1 | |
| Landestheater Neustrelitz | Landestheater Neustrelitz | Germany, Neustrelitz, Friedrich-Ludwig-Jahn-Straße 14 | 1922-09-29 | 2014-04-03 | 1922–2013 | 4 | |
| Lomma | Lomma | Sweden, Lomma | 1989-11-27 | 1989-11-27 | 1989–1993 | 2 | |
| Lillehammer, Kinoen | Kinoen Lillehammer | Norway, Lillehammer, Kirkegata 69 | 1965-09-23 | 1987-03-16 | 1965–1993 | 13 | |
| Little Fernwood Hall | Little Fernwood Hall | Canada, Victoria | 2010-06-08 | 2010-06-26 | 2010 | 1 | |
| Leveld Teaterlag | Leveld Teaterlag | Norway, Ål, Branesvegen 4 | 1995-04-01 | -- | 1995 | 1 | |
| Landestheater Württemberg-Hohenzollern | Landestheater Württemberg-Hohenzollern | Germany, Tübingen, Eberhardstraße 6 | 1955-- | 2003-06-14 | 1955–2003 | 9 | |
| Lawrence Batley Theatre | Lawrence Batley Theatre | England, Huddersfield, Queen St | 2005-05-04 | 2011-06-22 | 2005–2011 | 2 | |
| Larnaca Municipal Theatre | Larnaca Municipal Theatre | Cyprus, Larnaca | 2017-11-11 | 2017-12-20 | 2017 | 1 | |
| Lees Main Stage, University of Utah | Lees Main Stage, University of Utah | United States, Salt Lake City, 201 Presidents Cir | 1991-03-20 | 1991-04-06 | 1991 | 1 | |
| LIttle Opera House | LIttle Opera House | United States, Boston, 80 Norway Street | 1959-10-20 | 1959-11-03 | 1959 | 1 | |
| Liceo San José Lo Barnechea | Liceo San José Lo Barnechea | Chile, Santiago, Lo Barnechea | 2013-05- | -- | 2013 | 1 | |
| Lincoln Hall Theatre | Lincoln Hall Theatre | United States, Urbana, University of Illinois at Urbana-Champaign | 1951-01-10 | 1967-07-01 | 1951–1967 | 3 | |
| Landesbühne Niedersachsen Nord | Landesbühne Niedersachsen Nord | Germany, Wilhelmshaven, Virchowstraße 44 | 1972-11-18 | -- | 1972–1975 | 2 | |
| Lubuski Teatr im. Leona Kruczkowskiego | Lubuski Teatr im. Leona Kruczkowskiego | Poland, Zielona Góra, aleja Niepodległości 3/5 | 2006-06-10 | 2006-11-21 | 2006 | 1 | |
| Lamporecchio | Lamporecchio | Italy, Lamporecchio | 2016-03-11 | -- | 2016 | 1 | |
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