| AECS | Accident Emergency Call System 
| Others |
| AECS | Active Electronic Control Suspension
| Others |
| AECS | Aeromedical Evacuation Command Squadron
| Others |
| AECS | Aeronautical Emergency Communications System Plan
| Others |
| AECS | Amazon Elastic Container Service
| Others |
| AECS | Army Environmental Cleanup Strategy
| Others |
| AECS | Asia Evangelical College and Seminary
| Others |
| AECS | Association of European Correspondence Schools
| Others |
| AECS | Atomic Energy Central School
| Others |
| AECS | Audit Engagement Control Sheet
| Others |
| AECS | Automated Equipment Control System
| Others |
| AECS | Automotive Electronic Control Systems
| Others |
| AECS | Automotive Electronic Control Systems, LTD.
| Others |
| AECS | Auxiliary Emissions Control Strategy
| Others |
| AECS | Average Eye Closure Speed
| Others |
| AECS | Aviation Electrician's Mate Senior Chief Petty Officer
| Others |