| Abbreviation | Definition |
|---|---|
| ECO | Emergency Control Organisation |
| ECOL | Examinations Council of Lesotho |
| ECOS | Examinations Council Of Swaziland |
| ECOWAS | Economic Council of West African States |
| ECPD | Engineers' Council for Professional Development |
| ECRE | European Council on Refugees and Exiles |
| ECRE | European Council on Refugees Exiles |
| ECRI | Environment Council of Rhode Island |
| ECRL | European Council of Religious Leaders |
| ECSA | Engineering Council of South Africa |
| ECSD | Egyptian Council for Sustainable Development |
| ECSO | European Council of Skeptical Organisations |
| ECSP | EC-Council Certified Secure Programmer |
| ECStA | European Council for Student Affairs |
| ECTC | Elmira Chemung Transportation Council |
| ECTR | European Council on Tolerance and Reconciliation |
| ECUC | Education Credit Union Council |
| ECVP | Ec council VOIP Professional |
| ECWC | Euclid Creek Watershed Council |
| ECZ | Engineering Council of Zimbabwe |