| Abbreviation | Definition |
|---|---|
| ESSI | Education & Science Society, Incorporated |
| ESSNWO | Easter Seal Society of NorthWest Ohio |
| ESSSF | Education, School Support, and Scholarship Fund |
| ESSSFC | Education, School Support, and Scholarship Fund Coalition |
| ESTO | European Synthetic Turf Organisation |
| ETBI | Eye and Tissue Banks International |
| ETC | Educate The Children |
| ETHIC | Ending the Trafficking of Humans In the City |
| ETHICS | Empowerment Through HIV/AIDS Information, Community and Services |
| ETO | Energy Trust of Oregon |
| ETS | Education Testing Service |
| ETSI | European Telecommunications Standards Institute |
| EUCW | Estonian Union for Child Welfare |
| EUD | European Union of the Deaf |
| EUJS | European Union of Jewish Students |
| EUROFER | Europe Fer (Europe Iron/European Steel Association) |
| EUSA | Employers United for a Stronger America |
| EUTP | European Union of Tall Persons |
| EVBS | Essex Voluntary Blood Service |
| EWAN | Environmental Weeds Action Network |