| Abbreviation | Definition |
|---|---|
| APEC | Association of Pabna Ex-Cadets |
| APT | American Players Theatre |
| APTP | Albany Park Theater Project |
| APTTT | Association of Professional Theatre Trainers and Teachers (Canada) |
| AQ | Actors Quarter |
| AR | Artist and Repertoire |
| ARARA | American Rock Art Research Association |
| ART | Artistic Relief Technology |
| ARTC | Atlanta Radio Theatre Company |
| ARTS | Artists Rendering Their Services |
| ARTS | Arts Recognition and Talent Search |
| ARTT | Acquiring Restitution Through Talent |
| AS | Art Space |
| ASA | Art Service Association |
| ASCPA | Ananda Shankar Centre for Performing Arts |
| ASDS | Acts Scenario Development System |
| ASF | Alabama Shakespeare Festival |
| ASFB | Aspen Santa Fe Ballet |
| ASFK | Asociácia slovenských filmových klubov |
| ASFK | Association of Slovak Film Clubs |