| AATC | Actors Anonymous Theatre Company 
| Others |
| AATC | Adobe Authorized Training Center
| Others |
| AATC | Advanced Automotive Technology Certificate
| Others |
| AATC | African American Travel Conference
| Others |
| AATC | Alvin and the Chipmunks
| Others |
| AATC | American Aerospace Technical Castings
| Others |
| AATC | American Association for Taxi Cabs
| Others |
| AATC | American Avionic Technologies Corporation
| Others |
| AATC | Amrita Automotive Technology Center
| Others |
| AATC | Anglo-Argentine Tramways Company
| Others |
| AATC | Ann Arbor Track Club
| Others |
| AATC | Apartment Association of Tarrant County
| Others |
| AATC | Apple Authorized Training Center
| Others |
| AATC | Arogyadham- Ayurveda Treatment Center, India
| Others |
| AATC | Asian American Theater Company
| Others |
| AATC | Asian Aviation Training Centre
| Others |
| AATC | Atlanta Airlines Terminal Corporation
| Others |
| AATC | Australian Army Transportation Corps
| Others |
| AATC | Autodesk Authorized Training Courseware
| Others |