| Acronym | Definition |
|---|
| CIWS➣Close-In Weapon System (US Navy) |
| CIWS➣Canadian Injured Workers Society |
| CIWS➣Center for Integrated Watershed Studies (Binghamton University) |
| CIWS➣Community Information and Warning System (Australia) |
| CIWS➣Children's International Wildlife Sanctuary (Saratoga, NY) |
| CIWS➣Compliance Information Web Submission (EPA) |
| CIWS➣Chelan Interagency Weather System (Wenatchee, WA) |