| Altes Stadttheater Chemnitz | Altes Stadttheater Chemnitz | Germany, Chemnitz | 1918-02-24 | -- | 1918–1920 | 3 | |
| American Repertory Theatre | American Repertory Theatre | United States of America, Cambridge, Loeb Drama Center, 64 Brattle St | 1982-05- | 1991-03-09 | 1982–1992 | 3 | |
| Apollo teātris | Apollo teātris | Latvia, Riga, Pērnavas ielā | 1907-02-04 | -- | 1907–1908 | 3 | |
| Alley Theatre | Alley Theatre | United States of America, Houston, 615 Texas Ave | 1956-02-25 | 2021-05-23 | 1956–2021 | 3 | |
| Avenue Theatre | Avenue Theatre | England, London, 268 Northfield Avenue | 1892-04-19 | 1896-12-19 | 1892–1896 | 3 | |
| Apollotheater | Apollotheater | Germany, Bonn | 1906-05-05 | -- | 1906 | 3 | |
| Amsterdam | Amsterdam | Netherlands, Amsterdam | 1895-12-03 | -- | 1895–1985 | 3 | |
| Arvika | Arvika | Sweden, Arvika | 1879-01-16 | 1989-10-26 | 1879–1993 | 3 | |
| Apotekergaarden | Apotekergaarden | Norway, Grimstad | 2005-07-09 | 2024-07-20 | 2005–2024 | 3 | |
| Al Kasaba Theatre | Al Kasaba Theatre (masrah wasinamatuk alqasaba) | Palestinian Territories, West Bank | 2006-02-02 | 2008-06-26 | 2006–2009 | 3 | |
| Arbeiterkammersaal Feldkirch | Arbeiterkammersaal Feldkirch | Austria, Feldkirch, Widnau 2 | 1981-02-18 | -- | 1981–2006 | 3 | |
| Austria | Austria | Austria | 1918-03-15 | -- | 1918–1964 | 3 | |
| al-Qāhira | al-Qāhira (Cairo) | Egypt, Cairo | 1949-- | 1954-- | 1949–2006 | 3 | |
| apostrophe - Théâtre des Louvrais | L’apostrophe - Théâtre des Louvrais | France, Pontoise, Place de la Paix | 2008-11-13 | 2018-03-28 | 2008–2018 | 3 | |
| Athénée Théâtre Louis Jouvet | Athénée Théâtre Louis Jouvet | France, Paris, 24 Rue de Caumartin | 1929-04-27 | 2010-05-22 | 1929–2010 | 3 | |
| Åpne Teater, Det | Det Åpne Teater | Norway, Oslo, Tøyenbekken 34 | 1991-06-05 | 2000-09-09 | 1991–2007 | 3 | |
| Arts Theatre | Arts Theatre | England, London, 6-7 Great Newport Street | 1928-03-18 | -- | 1928–1950 | 3 | |
| Athenaeum Theatre | Athenaeum Theatre | Australia, Melbourne, 188 Collins Street | 1977-06-14 | 1982-07-24 | 1977–1982 | 3 | |
| Akademija za gledališče, radio, film in televizijo | Akademija za gledališče, radio, film in televizijo | Slovenia, Ljubljana, Nazorjeva ulica 3 | 1981-05-15 | -- | 1981–2003 | 3 | |
| Academy of Music | Academy of Music | United States of America, Richmond | 1903-10-01 | 1905-09-05 | 1903–1905 | 3 | |
| Appeltheater | Appeltheater | Netherlands, The Hague, Duinstraat 6 | 1979-09-07 | 2003-02-01 | 1979–2002 | 3 | |
| Avery Hall, Vassar College | Avery Hall, Vassar College | United States of America, Poughkeepsie | 1941-02-21 | 1951-03-17 | 1941–1951 | 3 | |
| Abbey Theatre | Abbey Theatre | United States of America, New York, Broadway & W 38th St | 1895-03-22 | 1976-05-16 | 1895–1975 | 3 | |
| Ålvundfjord, Samfunnshuset | Samfunnshuset Ålvundfjord (Aalvundfjord) | Norway, Ålvundfjord | 1956-02-09 | -- | 1956–1960 | 3 | |
| Aurora Theatre Company | Aurora Theatre Company | United States of America, Berkeley, 2081 Addison Street | 2001-04-06 | 2006-03-12 | 2001–2016 | 3 | |
| Arena del Sole | Arena del Sole | Italy, Bologna, Via dell'Indipendenza, 43-47 | 1898-07-27 | 2011-11-13 | 1898–2011 | 3 | |
| American University, AUC, The | The American University, AUC | Egypt, Cairo, Tahrir Square | 1995-10- | 2013-10-12 | 1995–2013 | 3 | |
| Alnwick Playhouse | Alnwick Playhouse | England, Alnwick, Bondgate Without | 2007-06-01 | 2014-10-07 | 2007–2022 | 3 | |
| Aulaen | Aulaen | Norway, Horten | 1965-09-12 | -- | 1965–1969 | 3 | |
| Al Iskandariyah | Al Iskandariyah (Alexandria) | Egypt, Alexandria | 1892-03-15 | 2006-06-29 | 1892–2006 | 3 | |
| Aulaen i Verdal | Aulaen i Verdal | Norway, Verdal, Verdal | 2012-11-05 | 2020-10-26 | 2012–2022 | 3 | |
| Apo Michanis Theatro | Apo Michanis Theatro (Apo Michanis Theatre) | Greece, Athens, 13 Akadimou street | 2012-04-22 | 2014-04-13 | 2012–2024 | 3 | |
| Apollo-Theater | Apollo-Theater | Germany, Siegen, Morleystraße 1 | 2008-03-07 | 2012-04-14 | 2008–2014 | 3 | |
| Albert Hall | Albert Hall | England, Leeds, Cookridge Street | 1909-02-18 | -- | 1909 | 3 | |
| Avon Theatre | Avon Theatre Stage | Canada, Stratford, 99 Downie St. | 1977-06-06 | 2024-09-28 | 1977–2024 | 3 | |
| Å Samfunnshus | Å Samfunnshus | Norway, Jerpstad | 1959-02-04 | -- | 1959–1961 | 3 | |
| Arbeidersamfundet | Arbeidersamfundet | Norway, Bodø | 1894-02-01 | -- | 1894–1928 | 3 | |
| Argot Studio, Teatro | Teatro Argot Studio | Italy, Rome, Via Natale del Grande 27 | 2012-02-08 | 2017-10-29 | 2012–2017 | 3 | |
| Alba Iulia | Alba Iulia | Romania, Alba Iulia | 1911-10-03 | -- | 1911–1914 | 3 | |
| Athens | Athens | Greece, Athens | 1970-02-19 | 1981-05-10 | 1970–2013 | 3 | |
| Askim | Askim | Norway, Askim | 1971-02-11 | -- | 1971–2005 | 3 | |
| Actors Playhouse (The Opposites Company) | Actors Playhouse (The Opposites Company) | United States of America, New York, 100A, 7th Av. S | 1959-02-04 | -- | 1959–1970 | 3 | |
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