| Aveny Teatret | Aveny Teatret | Denmark, 1820 Frederiksberg, Frederiksberg Allé 102 | 1986-12-11 | -- | 1986 | 1 | |
| Asnæs | Asnæs | Denmark, Asnæs | -- | -- | | | |
| Amatørteatret | Amatørteatret | Denmark, Brabrand | 1991-03-14 | 1991-03-25 | 1991 | 1 | |
| Arbejdernes Forsamlingsbygning på Enghavevej | Arbejdernes Forsamlingsbygning på Enghavevej | Denmark, Copenhagen, Jagtvej 69 | 1897-01-17 | -- | 1897 | 1 | |
| Aalborg | Aalborg | Denmark, Aalborg | 1873-10-30 | -- | 1873–1874 | 2 | |
| Aalborg Teater | Aalborg Teater | Denmark, Aalborg, Jernbanegade 11 | 1875-04-20 | 2014-10-04 | 1875–2014 | 32 | |
| Aarhus | Aarhus | Denmark, Aarhus | 1874-01-30 | -- | 1874 | 1 | |
| Aarhus Teater | Aarhus Teater | Denmark, Århus, Skolegade 9 | -- | 2015-02-28 | 1871–2015 | 48 | |
| Alexandria | Alexandria | Egypt, Alexandria | 1892-03-15 | 2006-06-29 | 1892–2006 | 2 | |
| Alexandria | Alexandria | Egypt, Alexandria | 2006-07-09 | -- | 2006 | 1 | |
| Al Salaam Theatre | Al Salaam Theatre | Egypt, Cairo | 2006-07-01 | 2006-07-03 | 2006 | 1 | |
| American University, AUC, The | The American University, AUC | Egypt, Cairo, Tahrir Square | 2013-10-11 | 2013-10-12 | 2013 | 1 | |
| Alnwick Playhouse | Alnwick Playhouse | England, Alnwick, Bondgate Without | 2007-06-01 | 2014-10-07 | 2007–2022 | 3 | |
| Alexandra Theatre | Alexandra Theatre | England, Birmingham, West Midlands, Suffolk Street Queensway | 1972-05-08 | -- | 1972 | 1 | |
| Alhambra Theatre | Alhambra Theatre | England, Bradford, West Yorkshire, Morley St | 1993-05-21 | 1993-05-22 | 1993 | 1 | |
| Alma Theatre, The | The Alma Theatre | England, Bristol, Avon, 18-20 Alma Vale Road | 2007-04-17 | 2017-03-18 | 2007–2017 | 3 | |
| Artrix | Artrix | England, Bromsgrove, Slideslow Drive | 2018-05-17 | -- | 2018 | 1 | |
| Arts Centre, The | The Arts Centre | England, Buxton | 2017-07-10 | 2017-07-12 | 2017 | 1 | |
| ADC Theatre | ADC Theatre | England, Cambridge, Park St | 1999-10-02 | 2022-03-12 | 1999–2022 | 4 | |
| Ashcroft Theatre | Ashcroft Theatre | England, Croydon, South London, Park Lane | 1962-11-19 | 1972-06-10 | 1962–1972 | 2 | |
| Assembly Rooms Theatre | Assembly Rooms Theatre | England, Durham, 40 N Bailey | 2022-10-05 | 2022-10-08 | 2022 | 1 | |
| Avenue Theatre | Avenue Theatre | England, Ealing, London, 268 Northfield Avenue | 1892-04-19 | 1896-12-19 | 1892–1896 | 3 | |
| Arts Centre | Arts Centre | England, Kings Lynn, Norfolk, 29 King Street | 1999-06-24 | -- | 1999 | 1 | |
| Arthur Cotterell Theatre | Arthur Cotterell Theatre at Kingston College | England, Kingston-upon-Thames, Kingston Hall Rd | 2012-03-17 | -- | 2012 | 2 | |
| Albert Hall | Albert Hall | England, Leeds, Cookridge Street | 1909-02-18 | -- | 1909 | 3 | |
| Adel Memorial Hall | Adel Memorial Hall | England, Leeds, West Yorkshire, Church Lane, Adel, | 2013-04-24 | 2013-04-27 | 2013 | 1 | |
| Arcola Theatre Studio 1 | Arcola Theatre Studio 1 | England, London, 24 Ashwin St | 2008-04-01 | 2009-08-22 | 2008–2009 | 2 | |
| Arcola Theatre | Arcola Theatre | England, London, 24 Ashwin St | 2003-02-04 | 2008-05-31 | 2003–2008 | 2 | |
| Arcola Theatre Studio 2 | Arcola Theatre Studio 2 | England, London, 24 Ashwin Street | 2011-06-29 | 2011-07-30 | 2011 | 1 | |
| Aldwych Theatre | Aldwych Theatre | England, London, 49 Aldwych | 1967-06-14 | 1973-06-02 | 1967–1991 | 6 | |
| Arts Theatre Club | Arts Theatre Club | England, London, 50 Frith St | 1928-11-13 | 1947-02-02 | 1928–1951 | 9 | |
| Arts Theatre | Arts Theatre | England, London, 6-7 Great Newport Street | 1928-03-18 | -- | 1928–1950 | 3 | |
| Almeida Theatre | Almeida Theatre | England, London, Almeida St | 1984-04-21 | 2018-12-01 | 1984–2018 | 10 | |
| Albany, The | The Albany | England, London, Douglas Way | 2013-09-25 | 2013-11-16 | 2013 | 1 | |
| Athenaeum Hall | Athenaeum Hall | England, London, Hampstead Heath Extension | 1893-01-26 | -- | 1893 | 1 | |
| Apollo Theatre | Apollo Theatre | England, London, Shaftesbury Avenue | 1928-11-04 | -- | 1928 | 1 | |
| Albery Theatre | Albery Theatre | England, London, St Martin's Lane | 2003-06-12 | 2003-08-16 | 2003 | 1 | |
| Adelphi Theatre | Adelphi Theatre | England, London, Strand | 1903-10-07 | -- | 1903 | 1 | |
| Athenaeum Hall | Athenaeum Hall | England, Manchester, Princess Street | 1907-11-16 | 1907-11-23 | 1907 | 1 | |
| Arts Centre, The | The Arts Centre | England, Ormskirk, Edge Hill University, St Helens Road | 2011-03-23 | 2014-10-16 | 2011–2014 | 2 | |
| Abbey Theatre Studio | Abbey Theatre Studio | England, St Albans, Hertfordshire, Westminster Lodge, Holywell Hill | 2006-10-13 | 2013-10-19 | 2006–2013 | 2 | |
| Angles Centre | Angles Centre | England, Wisbech, Cambridgeshire, Alexandra Road | 1993-06-18 | -- | 1993 | 1 | |
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