| Acronym | Definition |
|---|
| EESI➣Environmental and Energy Study Institute |
| EESI➣École Européenne Supérieure de l'Image (French art school) |
| EESI➣Energy and Environmental Systems Institute (Rice University; Texas) |
| EESI➣Energy and Environmental Security Initiative (US DoE) |
| EESI➣Eindhoven Embedded Systems Institute (Netherlands) |
| EESI➣Environmental Engineering and Sustainable Infrastructure (various locations) |
| EESI➣Environmental & Engineering Services Inc. (est. 1979; Oregon) |