| Acronym | Definition |
|---|
| ETWG➣East Tennessee Woodworkers Guild (est. 1983) |
| ETWG➣Energy Technology Working Group (est. 2003; Natural Resources Canada) |
| ETWG➣Environment Technical Working Group (UK) |
| ETWG➣Educational Technology Working Group (various universities) |
| ETWG➣External Tank Working Group (US NASA) |
| ETWG➣Emissions Trading Working Group (Sydney, Australia) |