| ACTRA | Alliance of Canadian Television and Radio Artists 
| Others |
| ACTRA | American Cowboy Team Roping Association
| Others |
| ACTRA | American Cowboys Team Roping Association
| Others |
| ACTRA | Arizona Cyber Threat Response Alliance
| Others |
| ACTRA | Asociacion Concesionarios Toyota Republica Argentina
| Others |
| ACTRA | Atlantic Canada Trail Riding Association
| Others |