| Name | Functions | Event Dates | Events | Resources  | ||
|---|---|---|---|---|---|---|
| Mark Alexander | Actor | 1974 | 1 | |||
| Frances Allberry | Actor | 1996 | 1 | |||
| Jasmina Avramović | Actor | 2000 - 2001 | 3 | |||
| Leigh Armor | Actor | 1994 | 1 | |||
| Margarethe Albrecht | Actor | 1906 - 1913 | 38 | |||
| - Arnold | Actor | 1897 | 1 | |||
| Kimio Anazawa | Lighting Designer | 1940 - 1968 | 8 | |||
| Ryland T. Acree | Actor | 2004 | 1 | |||
| Reece Arthur | Lighting Designer | 2011 | 1 | |||
| Eric Alexander | Actor | 2003 | 1 | |||
| Frank Arnold | Actor | 1908 | 1 | |||
| Frk. Alström | Actor | 1900 | 1 | |||
| Tiffany Abbott | Costume Designer | 2007 - 2011 | 2 | |||
| Nils Hofseth Andersen | Actor | 1983 | 2 | |||
| Jonas Antunes | Actor | 1988 - 1989 | 4 | |||
| A.M.J. | Sound Designer | 1988 - 1989 | 4 | |||
| Peter Andersson | Lighting Designer | 1993 | 42 | |||
| Monica Andersson | Actor | 1972 - 1973 | 5 | |||
| Arnaldo Antunes | Actor | 2002 | 1 | |||
| José Almino | Translator | 2002 | 1 | |||
| Kevin Angulo | Actor | 2011 | 1 | |||
| Jean-Phillipe Altenloh | Actor | 2011 | 1 | |||
| Vincent Allen | Lighting Designer | 2009 | 1 | |||
| Torborg Abelseth | Actor | 1900 | 8 | |||
| Fredrik Andersson | Actor | 1978 - 1980 | 3 | |||
| Annemarie Auerbach | Actor | 1920 | 1 | |||
| Inna Atrosjtsjenko | Actor | 2004 | 1 | |||
| Feodora Aleksandrovitsj | Designer | 2004 | 1 | |||
| 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 | |||