| Acronym | Definition |
|---|
| ECEI➣European Conference on Entrepreneurship and Innovation (various locations) |
| ECEI➣Engineering Credentials Evaluation International |
| ECEI➣École de Coiffure et d'Esthétique de l'Indre (French: School of Hairdressing and Aesthetics of Indre) |
| ECEI➣Early Childhood Education Initiative (Aspen Community Foundation) |
| ECEI➣Eastern Consolidated Energy, Inc. (research company; Warfield, KY) |