| Abbreviation | Definition |
|---|---|
| WHG | Wasserhaushaltsgesetz ( Federal Water Act) |
| WHI | Waterloo Hydrogeologic, Inc. |
| WHO | World Health Organization |
| WHOI | Wood's Hole Oceanographic Institute |
| WHOI | Woods Hole Oceanographic Institution |
| WHP | WOCE Hydrographic Program |
| WHPO | WOCE Hydrographic Program Office |
| WHPP | Wellhead Protection Program |
| WHS | Water Harvesting Structures |
| WHW | West Headwaters |
| WHWP | Western Hemisphere Warm Pool |
| WHYCOS | World Hydrological Cycle Observing System |
| WIA | Weather-Impacted Airspace |
| WIAP | Water In All Phases |
| WIBP | Western Iberia Buoyant Plume |
| WICP | Water Information Coordination Program |
| WIDD | Water Investigation and Development Department |
| WIF | Wastewater Infrastructure Fund |
| WIFA | Water Infrastructure Finance Authority |
| WIFD | Wildlife and Inland Fisheries Division |