| Name | Functions | Event Dates | Events | Resources  | ||
|---|---|---|---|---|---|---|
| Ulla Ankerstjerne | Actor | 1997 | 1 | |||
| Betty Arvaniti | Actor | 1994 | 1 | |||
| Alessandra Arlotti | Actor | 1997 - 1998 | 3 | |||
| Alekos Anastasiou | Lighting Designer | 1994 - 2023 | 8 | |||
| Imants Adermanis | Actor | 1994 | 1 | |||
| Hilde Brun Amundsen | Actor | 1997 | 1 | |||
| Nayelli Aguirre | Actor | 1997 | 1 | |||
| Isabell Alder | Actor | 1994 | 1 | |||
| Konstantinos Avarikiotis | Actor | 1994 | 1 | |||
| Tõnu Aav | Actor | 1962 - 2007 | 9 | |||
| Jaak Arro | Designer | 1997 | 1 | |||
| Katrin Aebischer | Actor, Dancer | 1997 - 2005 | 6 | |||
| Bon Atomi | Actor | 1994 | 1 | |||
| Richard Aigner | Actor | 1995 - 2002 | 2 | |||
| Eliot C. Arnold | Actor | 1997 | 1 | |||
| Michalis Angelidakis | Actor | 1994 | 1 | |||
| Veronika Argentzi | Actor | 1994 | 1 | |||
| Marcello Amici | Actor, Adaptation, Designer, Director | 1995 | 4 | |||
| Paola Amici | Translator | 1995 | 1 | |||
| Robert Ashby | Actor | 1978 - 1980 | 6 | |||
| Karim Ameur | Dramaturg | 1995 | 1 | |||
| Jörg Adae | Actor | 1996 | 1 | |||
| Pia Alnerius | Actor, Costume Designer | 1995 | 4 | |||
| Jane Arnfield | Actor | 1995 | 1 | |||
| Brian Aldous | Lighting Designer | 1993 - 1996 | 2 | |||
| Richard Alger | Actor | 1996 | 1 | |||
| Doug Armentrout | Actor | 1996 | 1 | |||
| Cristopher Akerlind | Lighting Designer | 1996 | 1 | |||
| Ricardo Alegre | Actor | 1997 - 1998 | 3 | |||
| Helio Ary | Actor | 1997 - 1998 | 3 | |||
| Zsuzsa Adorjáni | Actor | 1996 | 1 | |||
| Elisabeth Ancion | Costume Designer | 1996 - 1997 | 8 | |||
| Lee Arenberg | Actor | 1995 | 1 | |||
| Iris Atzwanger | Actor | 1989 - 1996 | 2 | |||
| Michelle Aten | Actor | 1995 | 1 | |||
| Frank Albrecht | Actor | 1995 - 2015 | 5 | |||
| Danielle Allan | Actor | 1996 | 1 | |||
| Alena Antalová | Actor | 1996 | 1 | |||
| Peter Aebi | Actor | 1993 - 1996 | 5 | |||
| Sharmila Abraham | Actor | 2003 - 2007 | 7 | |||
| Raivo Adlas | Actor | 1996 | 1 | |||
| Kais Adlas | Actor | 1996 | 1 | |||