| Acronym | Definition |
|---|
| EWO➣Education Welfare Officer |
| EWO➣Enterprise-Wide Optimization (process systems engineering) |
| EWO➣Eyes Wide Open (exhibit) |
| EWO➣Emergency War Order |
| EWO➣Engineering Work Order |
| EWO➣Executive Warrant Officer (Royal Navy; UK) |
| EWO➣Easy Way Out |
| EWO➣Earnings Withholding Order |
| EWO➣Extreme Wrestling Organization |
| EWO➣Electronic(s) Warfare Officer (US DoD) |