| Acronym | Definition |
|---|
| ECEF➣Earth Centered Earth Fixed |
| ECEF➣Esophageal Cancer Education Foundation (Manalapan, NJ) |
| ECEF➣Enterprise and Career Education Foundation (Australia) |
| ECEF➣Exhibition and Convention Executives Forum (Arlington, VA) |
| ECEF➣European Clean Energy Fund (EU) |
| ECEF➣Expert et Consultant en Éducation et Formation (French: Expert and Consultant in Education and Training) |
| ECEF➣Earliest Completing Edge First (algorithm) |
| ECEF➣Eosinophil Cytotoxicity Enhancing Factor (biological chemistry) |