| Abbreviation | Definition |
|---|---|
| IECC | International Environmental Code Compliancy |
| IECM | Integrated Environmental Control Model |
| IECS | Institute of Environmental Change and Society |
| IED | Industrial Emission Decrease |
| IED | Institute for Environmental Decisions |
| IEDSS | Intelligent Environmental Decision Support Systems |
| IEE | Initial Environmental Examination |
| IEE | Itial Environmental Evaluation |
| IEE | itial Environmental Examination |
| IEE | Itial Environmental Examinations |
| IEEC | Illawarra Environmental Education Centre |
| IEEM | Institute of Ecology and Environmental |
| IEEM | Institute of Environmental Engineering and Management |
| IEEP | Institute of European Environmental Policy |
| IEEP | International Environmental Education Programme |
| IEER | Initial Environmental Examination Report |
| IEEs | Initial Environmental Enquiries |
| IEES | Institute of ecology and environmental sciences |
| IEES | Institute of Ecology and Environmental Studies |
| IEFB | Integrated Ecological Floating Bed |