| Rank | Abbreviation | Meaning |
|---|
| ***** | AATC DAIR | Amphibious Air Traffic Control Direct Altitude Identity Readout System
| |
| ***** | AATC | Air National Guard Air Force Reserve Test Center
| |
| **** | AATC | Asociación Amigos del Tranvía de Córdoba
| |
| **** | AATC | Americans Against Traffic Calming
| |
| **** | AATC | Associação dos Advogados Trabalhistas de Campinas
| |
| **** | AATC | Apple Authorized Training Center Program
| |
| **** | AATC | Air to Air Temperature Cycling
| |
| **** | AATC | Advanced Automated Tactical Communications
| |
| **** | AATC | Apple Authorized Training Center
| |
| **** | AATC | Apple Authorised Training Centre
| |
| **** | AATC | American Association of Textile Chemists
| |
| **** | AATC | Airborne Antisubmarine Warfare Tactical Coordinator/Coordination
| |
| *** | AATC | Apple Autorisiertes Training Center
| |
| *** | AATC | Anti-Aircraft Training Center
| |
| *** | AATC | Advanced Automatic Train Control
| |
| *** | AATC | Asociación de Agencias de Turismo del Cusco
| |
| *** | AATC | Asian American Theater Company's
| |
| *** | AATC | An Adobe Authorized Training Center
| |
| *** | AATC | Association des Arpenteurs des Terres du Canada
| |
| *** | AATC | Automatic Air Traffic Control
| |
| *** | AATC | All About the Cloud
| |
| *** | AATC | Atlanta Airlines Terminal Corporation
| |
| *** | AATC | Asociacion Argentina de Terapia Cognitiva
| |
| *** | AATC | Autodesk Authorized Training Center
| |
| *** | AATC | Authorized Academic Testing Center
| |