| Abbreviation | Definition |
|---|---|
| ECM | Environmental Cell Modification |
| ECMS | Environmental Compliance Management Services |
| ECN | Environmental Change Network |
| ECNZ | Environmental Choice New Zealand |
| ECO | Ecological |
| ECO | Environmental Campus Organization |
| ECO | Environmental Career Opportunities |
| ECO | Environmental Careers Organization |
| ECO | Environmental Compliance Officer |
| ECO | Environmental Conservation Organization |
| ECOI | Environmental Community Of Interest |
| ECOP | Environmental Condition Of Property |
| ECOS | Environmental Conservation Online System |
| ECOS | Environmental Council of Sacramento |
| ECOS | Environmental Council of the States |
| ECOSAR | ECOlogical Structure Activity Relationship |
| ECOWAS | Environmental Concerns Of West African States |
| ECP | Embodied Carbon Policy |
| ECP | Environmental Compliance Program |
| ECP | Environmental Control Plan |