| Acronym | Definition |
|---|
| ECAA | European Common Aviation Area |
| ECAA | Electrical Contractors Association of Alberta (Canada) |
| ECAA | E-Commerce Asia Association (consortium) |
| ECAA | European Community Association Agreement |
| ECAA | Egyptian Civil Aviation Authority |
| ECAA | Essex County Archery Association (UK) |
| ECAA | European Conference on Aluminium Alloys |
| ECAA | Early Childhood Admissions Assessment (testing program) |
| ECAA | Ethiopian Civil Aviation Authority (Ethiopia) |
| ECAA | Échelle des Conduites Autoagressives (French developmental disorders) |
| ECAA | Esophageal Cancer Awareness Association |
| ECAA | East County Art Association (El Cajon, CA) |
| ECAA | Echelon Corps And Above |