| Abbreviation | Definition |
|---|---|
| APTTT | Association of Professional Theatre Trainers and Teachers (Canada) |
| ART | American Repertory Theater |
| ASTC | American Society of Theatre Consultants |
| ATFC | Actors Theater For Children |
| ATFR | Amateur Theater Festival Rotterdam |
| ATJ | Asian Theatre Journal |
| ATW | American Theatre Wing |
| AUTP | Advanced Undergraduate Theatre Program |
| AYDT | American Youth Dance Theater |
| BAIT | Bay Area Improv Theatre |
| BASOTI | Bay Area Summer Opera Theater Institute |
| BBTP | Black Bottom Theater Project |
| BCCT | Brick Childrens Community Theater |
| BCDT | Beijing Contemporary Dance Theater |
| BCT | Boise Contemporary Theater |
| BCT | Buskirk Chumley Theater |
| BCTT | Butterfly Creek Theatre Troupe |
| BDT | Birmingham Dance Theatre |
| BDT | Boulder Dinner Theatre |
| BDT | Boulder's Dinner Theatre |