| Wiener Arbeitsgemeinschaft f? Astronomie | Academic & Science |
| Writing for Academic Applications | Academic & Science |
| Wisconsin Alumni Association | Academic & Science |
| Wiener Arbeitsgemeinschaft für Astronomie | Academic & Science |
| Winthrop Alumni Association | Academic & Science |
| Wisconsin Arborist Association | Academic & Science |
| Washington Area Astronomers | Academic & Science |
| Westchester Amateur Astronomers | Academic & Science |
| Western Amateur Astronomers | Academic & Science |
| Westtown Alumni Association | Academic & Science |
| Washington Association of Accountants | Accounts and Finance |
| Wales (ak) | Airport Code |
| Wardens' Association of America | Business |
| Wam Active, LTD. | Business |
| World Artists Association | Business |
| Wisconsin Apartment Association | Business |
| Wireless Airport Association | Business |
| Wisconsin Association of Accountants | Business |
| Wisconsin Aquaculture Association | Business |
| World of Art and Antiques | Business |
| Washington Apartment Association | Business |
| Welded Aluminum Alloy | Business |
| Water-Augmented Air jet | Business |
| The World Atlatl Association, Incorporated | Business |
| Western Awning Association | Business |
| Worker Adjustment Assistance | Business |
| Western Arts Alliance | Community |
| World Apheresis Association | Community |
| Wisconsin Arborists Association | Community |
| Wisconsin Arborist Association's | Community |
| Wisconsin Auctioneers Association | Community |
| Washington Art Association | Community |
| Wavelet Analysis and its Applications conference | Community |
| When Artists Attack | Community |
| World Aluminum Abstracts | Community |
| Women's Action Alliance | Community |
| Wilmington Apartment Association | Community |
| World Athletic Association | Community |
| Web Analytics Association | Computing |
| Wireless Advertising Association | Computing |
| Web Application Architecture | Computing |
| Web Assisted Assessment | Computing |
| Web and App Activity | Computing |
| Water Apportionment Accord | Country Specific |
| Waris, Papua New Guinea (seismograph Station Code) | Earth Science |
| Wisconsin Alternate Assessment | General |
| Wreaths Across America | General |
| Warm Air Advection | General |
| Week Arranged in Advance | General |
| Work Assignment Area | General |
| Werkgroep Artsen Advocaten | General |
| World Assembly on Ageing | General |
| We're All Awesome | General |
| Wins Above Average | General |
| Walk Across America | General |
| Wide Angle Abuse | General |
| Winning An Argument | General |
| Water Availability Analysis | General |
| Waffen Amt And | General |
| Wolves Are Awesome | General |
| We Architech Anonymous | General |
| Women in Aeronautics and Astronautics | General |
| Wide Aperture Array | General |
| Wireless Android Auto | General |
| Wisconsin Automotive Aftermarket | General |
| War Assets Administration | Governmental |
| Wabash Motor Freight Tariff Association | Governmental |
| Weak Affirmative Action | Governmental |
| Winnipeg Airports Authority | Governmental |
| Wisconsin Archery Alliance | Governmental |
| World American Airlift | Governmental |
| Wien Air Alaska | Governmental |
| Working Age Agency | Medical |
| Wartime Aircraft Activity | Military and Defence |
| Wales, Alaska USA | Regional |
| West Australian Agency | Regional |
| Windows Administrator Authentication | Softwares |
| Wheatland Athletic Association | Sports |
| Woodbury Athletic Association | Sports |
