ENSI
| Acronym | Definition |
|---|---|
| ENSI | École Nationale Supérieure d'Ingénieurs (French engineering school) |
| ENSI | Environment and School Initiatives |
| ENSI | Encuesta Nacional Sobre Inseguridad (Spanish: National Survey on Insecurity; Mexico) |
| ENSI | Essex National Securities Inc. (Napa, CA) |
| ENSI | Evolution and Nature of Science Institute |
| ENSI | Emerging Non-traditional Security Issues |
| ENSI | Energia Nucleare Sub Italia |