| Abbreviation | Definition |
|---|---|
| WLW | Wenham Lake Watershed |
| WMC | World Meteorological Center |
| WMI | Watershed Management Initiative |
| WMLR | Welsh Marine Life Rescue |
| WMO | World Meteorological Organization |
| WMS | Watershed Modeling System |
| WMWDCWMP | Western Municipal Water District Cooperative Well Measuring Program |
| WMWG | Water Management Working Group |
| WNA | Western North Atlantic |
| WNAA | Western North Atlantic Area |
| WNAO | Western North Atlantic Ocean |
| WNFB | Western North Fiji Basin |
| WNW | West NorthWest |
| WO3DC | World Ozone Data Center |
| WOCE | World Ocean Circulation Experiment |
| WOCE-IPO | World Ocean Circulation Experiment - International Project Office |
| WOCE-NEG | World Ocean Circulation Experiment Numerical Experimentation Group |
| WOCE-SSG | World Ocean Circulation Experiment Scientific Steering Group |
| WOCR | Water- Oriented Commercial Recreation |
| WOCT | Water- Oriented Commercial Tourist |