| Acronym | Definition |
|---|
| EWG | Environmental Working Group |
| EWG | Europäische Wirtschaftsgemeinschaft (German: European Economic Community) |
| EWG | External Waste Gate (automobiles) |
| EWG | East-West Gateway (St. Louis, MO) |
| EWG | Einer Wird Gewinnen (German: One Will Win; quiz show) |
| EWG | Expert Working Group |
| EWG | Exempt Wholesale Generator |
| EWG | Economics Working Group (various organizations) |
| EWG | Electron-Withdrawing Group |
| EWG | Executive Working Group |
| EWG | Employment Working Group (various organizations) |
| EWG | Enterprise Working Group (various organizations) |
| EWG | UN/EDIFACT Working Group |
| EWG | Evaluation Work Group (various organizations) |
| EWG | Electronic Warfare Group |
| EWG | Edgar Winter Group (band) |
| EWG | Engineering Working Group |
| EWG | Enforcement Working Group (Commission for Environmental Cooperation) |
| EWG | Easy Way Gadgets (Gauteng, South Africa abrasive water jet technology) |
| EWG | Everyplace Wireless Gateway (IBM) |
| EWG | Equal Weight Grouping |
| EWG | Enterprise Wireless Gateway |
| EWG | Electric Wholesale Generator |
| EWG | Europäische Währungsgemeinschaft |
| EWG | Event Working Group |
| EWG | EIS Working Group |