| Lausanne | Lausanne | Switzerland, Lausanne | 1998-10-29 | -- | 1998 | 1 | |
| Lenzburg | Lenzburg | Switzerland, Lenzburg | 1991-09-12 | -- | 1991 | 1 | |
| Luzerner Theater | Luzerner Theater | Switzerland, Lucerne, Theaterstrasse 2 | 2017-01-18 | 2023-06-02 | 2017–2023 | 2 | |
| Löwenarena Sommeri | Löwenarena Sommeri | Switzerland, Sommeri | 1989-03-18 | -- | 1989 | 1 | |
| Lokremise | Lokremise | Switzerland, St. Gallen, Grünbergstrasse 7 | 2011-11-10 | 2015-05-05 | 2011–2015 | 2 | |
| Little Theater | Little Theater | Tanzania, Dar Es Salaam, | 1979-04-01 | -- | 1979 | 1 | |
| Latviešu strādnieku teātris | Latviešu strādnieku teātris | Ukraine, Kharkiv | 1917-09-20 | -- | 1917 | 1 | |
| Lyric Theatre | Lyric Theatre | United States of America, Allentown | 1904-05-13 | 1904-05-13 | 1904 | 1 | |
| Lydia Mendelssohn Theatre | Lydia Mendelssohn Theatre | United States of America, Ann Arbor, University of Michigan | 1935-05-30 | 1962-10-28 | 1935–1965 | 3 | |
| Lawrence College Memorial Chapel | Lawrence College Memorial Chapel | United States of America, Appleton, 510 E College Ave | 1935-11-19 | -- | 1935 | 1 | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Atlanta | 1895-12-28 | 1895-12-28 | 1895 | 1 | |
| Load of Fun | Load of Fun | United States of America, Baltimore, 120 W North Ave | 2009-04-30 | 2009-05-24 | 2009 | 1 | |
| Live Oak Theater | Live Oak Theater | United States of America, Berkeley, 1301 Shattuck Ave | 2018-01-05 | 2018-01-27 | 2018 | 1 | |
| Lyric Stage, The | The Lyric Stage | United States of America, Boston, 140 Clarendon Street | 1976-11-18 | 1992-02-09 | 1976–1992 | 3 | |
| LIttle Opera House | LIttle Opera House | United States of America, Boston, 80 Norway Street | 1959-10-20 | 1959-11-03 | 1959 | 1 | |
| Law Center for the Arts, West Virginia Wesleyan | Law Center for the Arts, West Virginia Wesleyan | United States of America, Buckhannon, 59 College Avenue | 2009-11-11 | -- | 2009 | 1 | |
| Loeb Drama Center | Loeb Drama Center | United States of America, Cambridge, 64 Brattle Street | 1961-03-23 | 2005-08-20 | 1961–2005 | 9 | |
| Lorna Byrne School | Lorna Byrne School | United States of America, Cave Junction, 102 S Junction Ave | 2005-12-03 | -- | 2005 | 1 | |
| Latzer Hall | Latzer Hall | United States of America, Champaign, 1001 S. Wright Street | 1947-12-10 | -- | 1947 | 1 | |
| Little Theatre | Little Theatre | United States of America, Chicago | 1914-04-28 | 1914-04-28 | 1914 | 1 | |
| Loyola Community Theater | Loyola Community Theater | United States of America, Chicago | 1949-03-05 | 1949-03-06 | 1949 | 1 | |
| Logan Square Masonic Temple | Logan Square Masonic Temple | United States of America, Chicago, Cnr Randolph & State Streets | 1938-12-18 | -- | 1938 | 1 | |
| Luella Theatre | Luella Theatre | United States of America, Chillicothe | 1908-02-04 | 1908-02-04 | 1908 | 1 | |
| Little Theatre | Little Theatre | United States of America, Cincinnati | 1913-- | 1913-- | 1913 | 1 | |
| Lake Pool Park | Lake Pool Park | United States of America, Cleveland | 2011-08-04 | -- | 2011 | 1 | |
| Lonnie Burten Baseball Field | Lonnie Burten Baseball Field | United States of America, Cleveland | 2011-08-02 | -- | 2011 | 1 | |
| Lincoln Park | Lincoln Park | United States of America, Cleveland | 2011-08-05 | -- | 2011 | 1 | |
| Lakewood Civic Auditorium | Lakewood Civic Auditorium | United States of America, Cleveland, 14100 Franklin Boulevard | 1981-08-12 | -- | 1981 | 1 | |
| Luther College | Luther College | United States of America, Decorah, 700 College Drive | 2001-02-02 | 2001-02-04 | 2001–2011 | 2 | |
| Lakewood Little Theatre | Lakewood Little Theatre | United States of America, Denver, 1980 Youngfield St | 1973-02-14 | 1973-03-11 | 1973 | 1 | |
| Long Island | Long Island | United States of America, Freeport | 1928-04-14 | -- | 1928 | 1 | |
| Luna Playhouse | Luna Playhouse | United States of America, Glendale, 3706 San Fernando Road | 2007-12-07 | 2008-01-20 | 2007 | 1 | |
| Laird Opera House | Laird Opera House | United States of America, Greenville | 1907-09-07 | 1907-09-07 | 1907 | 1 | |
| Loessin Playhouse | Loessin Playhouse | United States of America, Greenville, E 5th St, East Carolina University | 2006-11-16 | 2006-11-21 | 2006 | 1 | |
| Liberty Theatre, the | The Liberty Theatre | United States of America, Hailey, 110 N Main St | 2006-02-15 | 2006-03-05 | 2006 | 1 | |
| Lyceum Theatre | Lyceum Theatre | United States of America, Harrisburg | 1904-05-12 | 1908-03-28 | 1904–1907 | 2 | |
| Little Theatre, Central Hall, Hillsdale College | Little Theatre, Central Hall, Hillsdale College | United States of America, Hillsdale, 33 E College St | 1933-12-19 | -- | 1933 | 1 | |
| Lilly Hall Studio Theatre | Lilly Hall Studio Theatre | United States of America, Indianapolis, 4741 Clarendon Rd E Dr | 2019-12-04 | 2019--08 | 2019 | 1 | |
| Lyceum Theater | Lyceum Theater | United States of America, Ithaca | 1909-12-16 | -- | 1909 | 1 | |
| Lyric Theatre | Lyric Theatre | United States of America, Jakcson | 1908-10-12 | 1908-10-12 | 1908 | 1 | |
| Little Boston Library - S´Klallam Tribal Center | Little Boston Library - S´Klallam Tribal Center | United States of America, Kingston, 31912 Little Boston Rd NE | 2006-11-16 | -- | 2006 | 1 | |
| Linkville Playhouse | Linkville Playhouse | United States of America, Klamath Falls, 201 Main St | 2011-05-20 | 2011-06-11 | 2011 | 1 | |
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