| Abbreviation | Definition |
|---|---|
| ERSA | European Racquet Stringers' Association |
| ERTD | European Rural Tourism Development |
| ERTL | Emergency Response Team Leader |
| ESA | Entomological Society of America |
| ESBA | European Small Business Alliance |
| ESCG | European Society of Cardiology Guidelines |
| ESCH | Executive Service Corps of Houston |
| ESCRS | European Society of Cataract and Refractive Surgeons |
| ESCSI | Expanded Shale, Clay and Slate Institute |
| ESE | European Society of Endocrinology |
| ESICM | European Society of Intensive Care Medicine |
| ESPE | European Society for Paediatric Endocrinology |
| ESPN | European Society for Pediatric Neurosurgery |
| ESRS | European Sleep Research Society |
| ESSB | ESA Standardization Steering Board |
| ESSO | European Society of Surgical Oncology |
| ETA | Electronics Technicians Association |
| ETA | Elite Tennis Association |
| ETA | Environmental Transport Association |
| ETA | Erindale Taiwanese Association |