| Abbreviation | Definition |
|---|---|
| AEC | Albany Engineered Composites |
| AEC | Allegheny Executive Council |
| AEC | Alliance Entertainment Corporation |
| AEC | Aluminum Extruders Council |
| AEC | American English curriculum |
| AEC | Antigos Estudantes de Coimbra |
| AEC | Applied English Center |
| AEC | ASEAN Economic Community |
| AEC | Asian Economic Community |
| AEC | Associates in Emergency Care |
| AEC | Automatic Exposure Control |
| AECB | Acute Exacerbations of Chronic Bronchitis |
| AECB | Alabama Electrical Contractors Board |
| AECB | Association for Environment Conscious Building |
| AECC | Ada Early Childhood Center |
| AECC | Agrupamento de Escolas Coimbra Centro |
| AECC | Amarillo Emergency Communications Center |
| AECE | Agrupamento de Escolas Cidade do Entroncamento |
| AECF | Annie E Casey Fdn |
| AECF | Association des entreprises de Chine en France |