| Acronym | Definition |
|---|
| EWAC➣Early Warning and Control |
| EWAC➣Emergency Worker and Assistance Center (various organizations) |
| EWAC➣Electronic Warfare Aircraft Commander |
| EWAC➣Elijah Wood Appreciation Connection (fan club) |
| EWAC➣Electronic Warfare Anechoic Chamber |
| EWAC➣Emergency Warning And Caution |
| EWAC➣European Week Against Cancer (est. 1989; now European Day Against Cancer) |