EWIS
| Acronym | Definition |
|---|---|
| EWIS | Emergency Warning and Intercommunication System (alarm network) |
| EWIS | East-West-Information Service (metainformation platform; Eastern Europe) |
| EWIS | Electrical Wiring Interconnection System (aviation) |
| EWIS | External Wall Insulation System |
| EWIS | Enterprise-Wide Information System |
| EWIS | Electronic Warfare Information System |