| Acronym | Definition |
|---|
| CIWG➣Critical Incident Working Group (various locations) |
| CIWG➣Critical Infrastructure Working Group |
| CIWG➣Collaboration Interoperability Working Group |
| CIWG➣Communications Interoperability Working Group |
| CIWG➣Cyberinfrastructure Working Group |
| CIWG➣Combat Identification Working Group |
| CIWG➣Critical Interfaces Working Group |
| CIWG➣Critical Illness Working Group |
| CIWG➣Channel Islands Wholesale Group |