| Aesthetic Realism Theatre Company, The | The Aesthetic Realism Theatre Company | 2001 | 2 | |
| Afternoon Theatre, The | The Afternoon Theatre | 1909 | 2 | |
| Adelaide Festival of Arts | Adelaide Festival of Arts | 2006 | 1 | |
| Antrepriza D. I. Basmanova | Antrepriza D. I. Basmanova (D. I. Basmanov's Enterprise) | 1907 | 1 | |
| American Conservatory Theater | American Conservatory Theater | 1973 – 2007 | 8 | |
| Association Franco-Norvégienne | Association Franco-Norvégienne | 1929 | 1 | |
| Alexander Moissi | Alexander Moissi | 1933 | 2 | |
| Aarohan Theatre Group | Aarohan Theatre Group | 2003 – 2007 | 11 | |
| Albert Ranfts dramatiska turné | Albert Ranfts dramatiska turné | 1919 | 1 | |
| Artéria Színházi Társaság | Artéria Színházi Társaság | 2003 – 2004 | 4 | |
| Azad Teater | Azad Teater | 1992 | 1 | |
|
|
