ECEF
| 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) |