| Acronym | Definition |
|---|
| WSA | Web Sphere Application |
| WSA | Winchester School of Art (UK) |
| WSA | Wyoming State Archives |
| WSA | World Summit Award (mobile content) |
| WSA | Wafer Supply Agreement (semiconductor manufacturing) |
| WSA | Wall Street Associates (Tokyo, Japan) |
| WSA | World Steel Association (industry group) |
| WSA | World Service Authority (est. 1954; Washington, DC) |
| WSA | Windows Sockets Api |
| WSA | Web Service Architecture |
| WSA | Web Standards Awards |
| WSA | Web Services Addressing |
| WSA | Wilderness Study Areas |
| WSA | Web Services Architecture (Bow Street) |
| WSA | Wilbur Smith Associates |
| WSA | Whole School Approach (various locations) |
| WSA | War Shipping Administration (World War Ii) |
| WSA | World Shoe Association |
| WSA | Workers Solidarity Alliance |
| WSA | Wausau Signature Agency (Wausau, WI) |
| WSA | Wet Sulphuric Acid |
| WSA | Wekiva Study Area (Florida) |
| WSA | Washington Software Alliance |
| WSA | Water and Sewer Authority (Washington, DC) |
| WSA | Wilderness Preservation System |
| WSA | Williams Syndrome Association |
| WSA | Weapons Storage Area |
| WSA | Wheelchair Sports Australia |
| WSA | Water Supply Act |
| WSA | World Snowmobile Association |
| WSA | Wireless Security Auditor |
| WSA | Western States Affiliate (American Heart Association) |
| WSA | World Sleddog Association |
| WSA | Water Services Authority (South Africa) |
| WSA | World Snooker Association |
| WSA | Windows Sockets API (aka Winsock Application) |
| WSA | Well Spouse Association |
| WSA | Warship Support Agency |
| WSA | Wine and Spirit Association (London, UK) |
| WSA | Women's Student Association |
| WSA | Workforce Service Area |
| WSA | Western Sunbathing Association (AANR region) |
| WSA | West Sound Academy |
| WSA | Western Suppliers Association |
| WSA | William Self Associates |
| WSA | World Socialist Alliance (gaming, Red Alert 2) |
| WSA | World Student Association |
| WSA | Winsock Application (aka Windows Sockets API; programming interface) |
| WSA | Workplace Standards Authority (Australia) |
| WSA | Western Sahara Authority (UN) |
| WSA | Wisconsin Society of Anesthesiologists |
| WSA | Women Scientist Advisors |
| WSA | Wheelchair Sports Alberta (Canada) |
| WSA | Web Site Administrator |
| WSA | Welsh Socialist Alliance |
| WSA | Wall Street Analytics, Inc. |
| WSA | Women's Scuba Association |
| WSA | Wyzsza Szkola Agrobiznesu (Lomza, Poland) |
| WSA | Whole School Assembly |
| WSA | Wow Strong Arms |
| WSA | Williams, Stern & Associates |
| WSA | Wahsatch Shooters Association |
| WSA | Washington Shotokan Association |
| WSA | Warfare Systems Architect |
| WSA | Washington Staffing Association |
| WSA | Watercolor Society of America |
| WSA | Warwick Soccer Association (Rhode Island) |
| WSA | Walking Start Address (reliability testing) |
| WSA | William Stucky & Associates Inc. |
| WSA | Weald School Association |
| WSA | Weapons Systems Analysis |
| WSA | Wake-Sleep Algorithm |
| WSA | Web Services Authorization (Oasis) |
| WSA | Winter Storm Alert |
| WSA | WebSphere Advanced Edition (IBM) |
| WSA | Work Statement and Authorization |
| WSA | White Student Alliance |
| WSA | Weather Sensing Antenna |
| WSA | Weapon/Warfare Systems Acquisition/Architect |
| WSA | Waveguide Slot Array |
| WSA | World Sport Fighting Association |
| WSA | Wafer Slip Abnormality |
| WSA | Wing Staff Agency (US DoD) |
| WSA | West of Scotland Advisory Council (UK) |
| WSA | Wire Sizing Amps |
| WSA | Water Solutions for Africa, Inc. (New York) |