| Acronym | Definition |
|---|
| ECGA | Essex County Greenbelt Association (Massachusetts) |
| ECGA | École de Culture Générale pour Adultes (French: School of General Knowledge for Adults; Switzerland) |
| ECGA | Export Credit Guarantee Agency |
| ECGA | Encompass Group Affiliates |
| ECGA | Extended Compact Genetic Algorithm |
| ECGA | European Clay Groups Association |
| ECGA | Eastern Counties Gymnastics Association (UK) |
| ECGA | European Carbon and Graphite Association |
| ECGA | Étude Conseils et Gestion d'Assurance (French: Study Tips and Insurance Management) |
| ECGA | Eastern Cotton Growing Area (Tanzania) |
| ECGA | Environmental Care and Global Awareness |
| ECGA | Early College at Guilford Association (North Carolina) |
| ECGA | East Caribbean Golf Association |
| ECGA | European Church Growth Association |
| ECGA | East Coast Gasser Association |
| ECGA | Emerald City Gymnastics Academy (Redmond, CA) |
| ECGA | East Coast Greenway Alliance, Inc. |
| ECGA | Energy Conservation Grant Award (Michigan Public Service Commission) |