| W | watt |
| W&B | weight and balance |
| W&C | wire and cable |
| W-G | water-glycol |
| W/A | work-around |
| W/B | wide band |
| W/C | workmen's compensation |
| W/CDA | weight/coefficient of drag times area |
| W/E | wing elevon |
| W/E | write/erase |
| W/G | water-glycol |
| W/H | wire harness |
| W/S | work station |
| W/T | wind tunnel |
| W/W | wheel wing |
| W/WMS | water/waste management system |
| W/h | watt hour |
| W/m2 | watts per square meter |
| WA | wide angle |
| WA | work authorization |
| WAC | world aeronautical chart |
| WAD | work authorization document |
| WAD/SO | work authorization document/shop order |
| WADD | Wright Air Development Division |
| WAMP | weight and mass property |
| WAN | wide area network |
| WAN | work authorization number |
| WAR | work authorization report |
| WAR | work authorization request |
| WAT | web action time |
| WATS | wide area telephone service |
| WB | water boiler |
| WB | wet bulb |
| WB | wet bulk |
| WB | wheel base |
| WB | wide band |
| WBA | wide-band amplifier |
| WBC | white blood cells |
| WBD | wide-band data |
| WBFDM | wide-band frequency division multiplexer |
| WBR | wide-band radiometer |
| WBR | workbench rack |
| WBS | work breakdown structure |
| WBSC | wide-band signal conditioner |
| WBT | wide-band terminal |
| WBTCH | water boiler thermal control hydraulics |
| WBTS | wide-band transmission system |
| WC | work control |
| WCC | Western Computing Center (Rockwell) |
| WCC | work control center |
| WCCS | window contamination control system |
| WCCU | wireless crew communication unit |
| WCDB | work control data base |
| WCDDT | wet countdown demonstration test |
| WCL | water coolant line |
| WCL | water coolant loop |
| WCP | weapon control platform |
| WCP | weight control program |
| WCP | wing chord plane |
| WCP | work control plan |
| WCS | waste collection system |
| WCS | waste collector system |
| WCS | wing center section |
| WCS | work control system |
| WCS | writable control storage |
| WCSC | West Coast Switching Center |
| WD | wage determination |
| WD | wired discrete |
| WD | withdrawn |
| WD | workday |
| WDL | Western Development Laboratory |
| WDS | wake deluge supply |
| WEN | write enable |
| WER | weight estimating relationship |
| WETF | Weightless Environment Test Facility (JSC) |
| WFF | Wallops Flight Facility |
| WFMP | work force motivation plan |
| WFNA | white fuming nitric acid |
| WG | waveguide |
| WG | working group |
| WGAI | working group agenda item |
| WGM | working group meeting |
| WGSU | water-glycol service unit |
| WHETS | whetstone benchmarking |
| WHS | White Sands, New Mexico |
| WIB | "when" interrupt block |
| WIC | warning information correlation |
| WICOMO | Wang Institute cost model |
| WIF | water immersion facility |
| WILMA | wire list management and accounting (KSC) |
| WINDS | weather information network display system |
| WIP | work in progress |
| WIPICS | work-in-process inventory control system |
| WIS | WWMCCS information system |
| WIS | Wallops Island Station, Virginia |
| WIX | wait for index |
| WL | waterline |
| WL | wavelength |
| WL | wire list |
| WLOS | window line of sight |
| WLS | western launch site |
| WM | waste management |
| WM | wattmeter |
| WMC | waste management compartment |
| WMS | waste management system |
| WNINTEL | warning notice intelligence sources or methods |
| WO | work order |
| WOC | work order control |
| WOD | word of day |
| WODWNY | Western Office, Downey |
| WOM | Woomera, Australia |
| WON | work order number |
| WONG | weight on nose gear |
| WOO | Western Operations Office (NASA) |
| WOP | wing outer panel |
| WORM | write-once, read-many |
| WOW | weight on wheels |
| WOW | worst on worst |
| WOWLON | weight on wheels longitudinal |
| WP | water plane |
| WP | waterproof |
| WP | way point |
| WP | weapons platform |
| WP | weatherproof |
| WP | work package |
| WP | working pressure |
| WP | wrist pitch |
| WPAFB | Wright-Patterson Air Force Base |
| WPANL | Wright-Patterson Aeronautical Laboratory |
| WPD | work package description |
| WPD | work program directive |
| WPF | work process flow |
| WPG | work package grouping |
| WPI | work process indicator |
| WPM | work package manager |
| WPMCP | work package manpower and cost plan |
| WPP | water pump package |
| WPP | work package plan |
| WPPS | work package planning sheet |
| WPS | weather protection system |
| WR | wrist roll |
| WRL | wing reference line |
| WRO | work release order |
| WRP | weight reduction proposal |
| WRP | wing reference plane |
| WRT | with request to |
| WS | water servicer |
| WS | weather stripping |
| WS | windshield |
| WS | work statement |
| WS | work station |
| WSB | water spray boiler |
| WSC | wide-band signal conditioner |
| WSCC | work station control center |
| WSGR | White Sands ground relay |
| WSGT | White Sands ground terminal |
| WSMC | Western Space and Missile Center |
| WSMCR | Western Space and Missile Center Range |
| WSMCR | Western Space and Missile Center regulation |
| WSMR | White Sands Missile Range |
| WSO | water servicer operator |
| WSP | work sequence plan |
| WSPR | weapon system problem report |
| WSTA | weapon system testability analyzer |
| WSTF | White Sands Test Facility |
| WSTV | W-sensor test vehicle |
| WSU | water servicing unit |
| WSV | weapon system vehicle |
| WT | watchdog timer |
| WT | watertight |
| WT | wind tunnel |
| WT | wire ticket |
| WTA | wire traceability and accountability |
| WTR | Western Test Range (VAFB) |
| WTR | work transfer record |
| WTSC | wet tantalum slug capacitor |
| WTT | wind tunnel test |
| WUC | work unit code |
| WUCF | work unit code file |
| WUPL | where-used parts list |
| WUSCI | Western Union Space Communications, Incorporated |
| WVI | work volume indicator |
| WVIS | work volume indicator system |
| WW | water waste |
| WW | wire wrap |
| WW | wire-wound |
| WWMCCS | worldwide military command and control system |
| Wpc | watts per candle |
| w/m | words per minute |
| wpm | words per minute |
| wps | words per second |