| Acronym | Definition |
|---|
| ECMI | European Centre for Minority Issues |
| ECMI | European Consortium for Mathematics in Industry (est. 1986) |
| ECMI | European Conference on Mathematics for Industry |
| ECMI | European Capital Markets Institute |
| ECMI | Europe Chimie Matériel Industriel (French chemical company) |
| ECMI | Études et Conseils en Matière Immobilier (French: Educational Consultancy in Material Properties) |
| ECMI | Electronic Countermeasures Improvement (USAF B-52) |
| ECMI | Entreprise de Chaudronnerie Métallerie Industrielle (French: Metalwork Industrial Boilers Business) |
| ECMI | Enterprise Capital Management Inc. (Ontario, Canada; investment counseling) |
