| WD | White Dwarf | - | Atmospheric Research Center |
| WFF | Wallops Flight Facility | - | Atmospheric Research Center |
| WFPC | Wide Field/Planetary Camera | - | Atmospheric Research Center |
| WFPCII | Replacement For WFPC | - | Atmospheric Research Center |
| WIMP | Weakly Interacting Massive Particle | - | Atmospheric Research Center |
| WINDII | Wind Imaging Interferometer | - | Atmospheric Research Center |
| WIYN | Wisconsin/Indiana/Yale/NOAO Telescope | - | Atmospheric Research Center |
| WMO | World Meterological Organisation | - | Atmospheric Research Center |
| WR | Western Range | - | Atmospheric Research Center |
| WSGT | White Sands Ground Terminal | - | Atmospheric Research Center |
| WSMR | White Sands Missile Range | - | Atmospheric Research Center |
| WTR | Western Test Range | - | Atmospheric Research Center |
| WUPPE | Wisconsin Ultraviolet PhotoPolarimter Experiment | - | Atmospheric Research Center |
