| Acronym | Definition |
|---|
| EWCS➣European Working Conditions Survey (European Foundation for the Improvement of Living and Working Conditions) |
| EWCS➣East Wellington Community Services (formerly East Wellington Advisory Group; Canada) |
| EWCS➣European Wideband Communications System |
| EWCS➣Electronic Warfare Coordination Center |
| EWCS➣Electronic Warfare Control Ship/System |
| EWCS➣Electronic Warfare Command Station/System |