| Abbreviation | Definition |
|---|---|
| EW | Electronic warfare |
| EWACS | Electronic Wide Angle Camera System |
| EWAW | Electric Warlock Acid Witch |
| EWB | Electronic Warning Bulletin |
| EWBM-SA | Electronic Warfare Battle Manager Situation Awareness |
| EWC | Electronic Warfare Center |
| EWCC | Electronic Warfare Coordinator Course |
| EWCC | Electronic Work Capacity Certificate |
| EWDM | Electric Wildlife Deterrent Mat |
| EWDM | Electronic World Directory of Mathematicians |
| EWDS | Electronic Warfare Data Systems |
| EWDS | Electronics Worldwide Digital Switches |
| EWEB | Eugene Water & Electric Board |
| EWEB | Eugene Water and Electric Board |
| EWEB | Eugene Water Electric Board |
| EWF | Edit Window Field |
| EWH | Electric Water Heater |
| EWI | Electric Wind Instrument |
| EWI | Electrical Wind Instrument |
| EWIC | Electronic Workshops in Computing |