| Name | Functions | Event Dates | Events | Resources  | ||
|---|---|---|---|---|---|---|
| Liam Adler | Actor | 2011 - 2012 | 2 | |||
| Rebecca Away | Actor | 1984 | 1 | |||
| Maureen Anderman | Actor | 1973 | 1 | |||
| Henna Ahuja | Actor | 2010 | 1 | |||
| Cecília Angélica | Actor | 1956 | 1 | |||
| Barbara Araújo | Actor | 2005 - 2006 | 2 | |||
| Francesc Albiol | Actor | 2010 - 2011 | 40 | |||
| Scott Alexander | Producer | 1933 | 1 | |||
| James Anderson | Actor | 1917 - 1926 | 2 | |||
| Val Anderson | Actor | 1917 | 1 | |||
| Anna Augustynowicz | Director | 2008 - 2024 | 2 | |||
| Shannon Anderson | Costume Designer | 2011 | 1 | |||
| Arthur Armand | Actor | 1917 - 1933 | 2 | |||
| Mr. Adelheim | Actor | 1888 - 1893 | 3 | |||
| Reingart Ahrem | Actor | 1938 - 1943 | 4 | |||
| Kristinn Andrésson | Designer | 1924 - 1932 | 4 | |||
| Ita Aagaard | Director | 2008 | 1 | |||
| Diego Arciniegas | Actor | 2011 | 1 | |||
| Helena Anymore | Actor | 2011 | 2 | |||
| Farzad Varzande Azar | Composer | 2006 | 1 | |||
| Freyja Antonsdóttir | Actor | 1944 | 1 | |||
| Kristján Arnljótsson | Lighting Designer | 1944 | 1 | |||
| Antonio Algarra | Director | 2010 | 1 | |||
| Tony Abatemarco | Actor | 2011 | 1 | |||
| Rosalind Ayres | Actor, Director | 2011 - 2014 | 2 | |||
| Josh Atkins | Actor | 2011 | 1 | |||
| Katherine Arfken | Designer | 2011 | 1 | |||
| Gustav Adolph | Actor | 1895 - 1900 | 4 | |||
| Sarah Agnew | Actor | 2010 - 2019 | 4 | |||
| Paul Arendt | Actor | 1893 - 1909 | 8 | |||
| Gabrielle Abbott | Actor | 2011 | 1 | |||
| Emilia Aliprandi-Pieri | Actor | 1889 - 1902 | 23 | |||
| Luiz Augusto | Actor | 1971 - 1973 | 5 | |||
| Johan Andersen | Actor | 1859 - 1861 | 2 | |||
| Heinrich Albrecht | Actor | 1861 - 1871 | 4 | |||
| - Albrechtsen | Actor | 1866 | 1 | |||
| Nils Wilhelm Almlöf | Actor | 1869 | 1 | |||
| H. Andersen | Actor | 1871 - 1872 | 2 | |||
| Frk. Abrahamsen | Actor | 1871 | 6 | |||
| Mr. Ahlström | Actor | 1875 | 1 | |||
| Josef Altmann | Actor | 1876 - 1899 | 12 | |||
| Frk. Anders | Actor | 1876 | 1 | |||