| Acronym | Definition |
|---|
| ECES | East and Central European Studies (Czech Republic) |
| ECES | European Centre for Electoral Support (UK) |
| ECES | École Communautaire de l'Enseignement Supérieur (French: Community School of Higher Education) |
| ECES | Expeditionary Civil Engineer Squadron (US Air Force unit) |
| ECES | Energy Conservation through Energy Storage |
| ECES | École Cantonale pour Enfants Sourds (French: Cantonal School for Deaf Children; Switzerland) |
| ECES | Egyptian Center for Economic Studies (Cairo, Egypt) |
| ECES | Environmental Cost Element Structure |
| ECES | Elite Cleaning & Environmental Services (UK) |
| ECES | Extension Continuing Education Solutions (Florida) |
| ECES | Elliptic Curve Encryption Scheme (cryptography) |
| ECES | Early Childhood Education Service |
| ECES | European Center of Environmental Studies |
| ECES | Evaluating Contractors Estimating System |