| Abbreviation | Definition |
|---|---|
| WSSH | White Sands Space Harbor |
| WSSN | Worldwide Space Support Net |
| WSU | Water Servicing Unit |
| WSW | World Space Week |
| WSZ | Work Zone Safety |
| WT | Watchdog Timer |
| WT | WeighT |
| WT | Wire Ticket |
| WTA | Wire Traceability and Accountability |
| WTE | NASA Langley Research Center Wind Tunnel Enterprise |
| WTR | Water |
| WTRSYS | WaTeR SYStem |
| WTSC | Wet Tantalum Slug Capacitor |
| WTT | Wind Tunnel Test |
| WUCF | Work Unit Code File |
| WUPPE | Wisconsin Ultraviolet Photo Polarimeter Experiment |
| WVCF | Western Vehicle Checkout Facility |
| WVI | Wireless Vehicle Interface |
| WW | Water Waste |
| WW | Wire Wrap |