| Acronym | Definition |
|---|
| ECTA | Essex County Trail Association (Hamilton, MA) |
| ECTA | European Competitive Telecommunications Association |
| ECTA | Early Childhood Teachers Association (Australia) |
| ECTA | European Chemical Transport Association (Belgium) |
| ECTA | Electronic Cigarette Trade Association (Canada) |
| ECTA | East Coast Timing Association (racing; Townsend, DE and Enterprise, AL) |
| ECTA | European Communities Trade Mark Association (Antwerp, Belgium) |
| ECTA | European Callers and Teachers Association (square dance) |
| ECTA | European Cutting Tools Association |
| ECTA | Eurasian Colorectal Technologies Association |
| ECTA | Empowering Communities to Transcend Adversity |
| ECTA | Executive Counselling and Training Academy (Singapore) |
| ECTA | Enzyme-Catalyzed Therapeutic Agent |
| ECTA | Evolutionary Computation Theory and Application (conference) |
| ECTA | European Collegiate Tennis Association (est. 2007) |
| ECTA | Équipe de Combat Tactique d'Airsoft d'Ile de France (French airsoft team) |
| ECTA | Eastern Canadian Thoroughbred Association (est. 1983) |
| ECTA | Education, Curriculum, and Training Associates (Nepal) |
| ECTA | East Cheshire Training and Assessment Centre (Cheshire, UK) |
| ECTA | Exploratory Clinical Trial Applications (various organizations) |
| ECTA | Edinburgh Community Technology Academy (UK) |
| ECTA | East Coast Trail Association |
| ECTA | European Commission Technical Assistance |
| ECTA | Educación, Comunicación y Tecnología Alternativa |
| ECTA | Emissions Control Technology Association |
| ECTA | East Career and Technical Academy (Las Vegas, NV) |
| ECTA | Equipe Communautaire de Traitement Actif (French: Community Active Treatment Team; Canada) |
| ECTA | European Conference on Trafficking in Arms |
| ECTA | Engineer Center Team Activities |