| Abbreviation | Definition |
|---|---|
| WIFM | Wes Implicit Flooding Model |
| WIK | Water Injection Kit |
| WIMP | Windward Island Passages Monitoring Program |
| WIOM | World Input- Output Model |
| WIOMSA | Western Indian Ocean Marine Science Association |
| WIP | West Indian Preparation |
| WIS | Water Injection System |
| WISF | Western Irish Sea Front |
| WISG | Water Issues Study Group |
| WISP | Winter Icing and Storms Project |
| WISPIT | WISP Instrument Test |
| WIWL | Within International Water Limits |
| WKP | Woodville Karst Plain |
| WKPP | Woodville Karst Plain Project |
| WL | Water Level |
| WL | Waterline |
| WLI | Water-Level Indicator |
| WLP | Watercourse and Lake Protection |
| WLPZ | Watercourse and Lake Protection Zone |
| WLRD | Water and Land Resources Division |