| w | westlich |
| W | Westen |
| WA | Washington (State) |
| WAAS | Wide area augmentation system (or sites) |
| WAC | World Aeronautical Chart |
| WACMA | Western Australia Central Map Agency |
| WADGPS | Wide Area Differential GPS |
| WADM | Dept. of Mines Western Australia |
| WAG | Wireless Assisted GPS |
| WAGAP | Washington Gap Analysis Program |
| WAIS | Wide-area Information Server (or Service or System); Western Antarctic Ice Sheet |
| WALIS | Western Australian Land Information System |
| WAML | Western Assn. of Map Libraries |
| WAML IB | Western Assn. of Map Libraries Information Bulletin |
| WAN | Wide area network |
| WAP | Wireless Application Protocol |
| Wash. | Washington (State) |
| WAT | Weighted-average toxicity |
| WB | World Bank |
| WBVTR | Wide-band video tape recorder |
| WCB | Workshop Certification Board (ACSM) |
| WCCS | Washington Council of County Surveyors |
| WCMC | World Conservation Monitoring Center |
| WCRP | World Climate Research Program |
| WCS | World Construction Set (Questar Productions); World coordinate system |
| WD | Working Draft (ISO) |
| WDB I | World Data Bank I (US CIA) |
| WDB II | World Data Base II |
| WDDES | World Digital Database for Environmental Science (ICA/IGU) |
| WDG | Washington Dept. of Game |
| WDGER | Washington Div. of Geology and Earth Resources |
| Wdlg. | Widerlager |
| W.D.M.C. | War Dept. Map Collection (U.S.) |
| WDMS | Watershed Data Management System |
| WDNR | Washington Dept. of Natural Resources |
| WDOE | Washington Dept. of Ecology |
| WEF | Water Environment Federation |
| WELU | Western Energy Land Use Team |
| WESTFED | Western Federation of Professional Surveyors |
| WET | Wetland Evaluation Technique |
| WFPLS | Western Federation of Professional Land Surveyors |
| WFPS | Western Federation of Professional Surveyors |
| W.G. | Wired glass skylight |
| WGMG | Working Group on Map Generalization (ICA) |
| WGNHS | Wisconsin Geological and Natural History Survey |
| WGS | World Geodetic System; World Geodetic Survey |
| WGS 84 | World Geodetic System of 1984 |
| W.H. | Wirtshaus = public house, inn |
| WI | Wisconsin |
| WIC | Westindische Compagnie |
| WIMS | Weather Information Management System |
| Wis. | Wisconsin |
| WIS | Watershed Information System |
| WISCLAND | Wisconsin Initiative for Statewide Cooperation on Landscape Analysis and Data |
| WISE | Women Investigating Sciences and Environment (Univ. of Nebraska) |
| WLIA | Wisconsin Land Information Society |
| WLS | Weighted least squares |
| WLU | World Land-use Survey |
| WMATA | Washington Metropolitan Area Transit Authority |
| WMC | Western Mapping Center (USGS) |
| WMD | Water management district |
| .WMF | Windows Metafile Format |
| WML | Wireless markup language |
| WMO | World Meteorological Organization |
| WMS | Washington (D.C.) Map Society; Work Management System; World Mapping System; World Market Strategies Ltd. |
| WNRO | GPS Week Number Roll Over |
| WNW | West northwest |
| WO | Welsh Office |
| WOM | Web Object Management |
| WORM | Write Once, Read Many |
| WP | Word processor |
| WPCF | Water Pollution Control Federation |
| .WPG | WordPerfect Graphic format |
| WPU | Wilayah Pembangunan Utama |
| WQM | Water quality monitor |
| WR | Water Resources; Western Region |
| WRAP | Western Regional Applications Program (NASA) |
| WRCB | Water Resources Control Board |
| WRD | Water Resources Div. (USGS); Water Resources Dept. |
| WRI | Water Resources Investigation |
| WRIDS | Wildland Resources Information Display System |
| WRIR | Water Resources Investigation Report |
| WRIS | Wildland Resources Information System |
| WRRI | Water Resources Research Inst. |
| WRS | World Reference System (Landsat) |
| WRSIC | Water Resources Scientific Information Center |
| WS | Work station |
| WSC | Water Survey of Canada |
| WSDOT | Washington State Dept. of Transportation |
| WSLD | Western Samoa Lands and Survey Dept. |
| WSLS | Wisconsin Society of Land Surveyors |
| WSM | Widener Surveying and Mapping (Firm) |
| WSP | Water-supply Paper |
| WSPS | Western Society of Professional Surveyors |
| WSU | Washington State Univ. |
| WSUCSC | Washington State Univ. Computing Service Center |
| WSW | West southwest |
| W.T. | Water tank; Washington Territory |
| WTCD | Deltaic watercourse |
| WTUSM | Wuhan Technical University of Surveying and Mapping |
| WV | West Virginia |
| W. Va | West Virginia |
| WVALS | West Virginia Assn. of Land Surveyors |
| WVGES | West Virginia Geological and Economic Survey |
| WVS | World Vector Shoreline (USDMA) |
| WVS+ | World Vector Shoreline Plus |
| WVSPLUS | World Vector Shoreline Plus |
| WWW | World Wide Web |
| WY | Wyoming |
| Wyo. | Wyoming |
| WYSDOT | Washington State Dept. of Transportation |
| WYSIWYG | What you see is what you get |
| W3C | World Wide Web Consortium |