| WSA | Wadeable Streams Assessment 
| Others |
| WSA | Walter Sedovic Architects
| Others |
| WSA | War Shipping Administration
| Others |
| WSA | Washington Scuba Alliance
| Others |
| WSA | Washington Software Alliance
| Others |
| WSA | Washington State Archives
| Others |
| WSA | Washington Student Association
| Others |
| WSA | Wasua, Papua New Guinea
| Others |
| WSA | Water and Sewage Authorization
| Others |
| WSA | Weapon Storage Area
| Others |
| WSA | Web Security Appliance
| Others |
| WSA | Web Service Addressing
| Others |
| WSA | Web Service Architecture
| Others |
| WSA | Web Services Addressing
| Others |
| WSA | Web Services Architect
| Others |
| WSA | Web Services Architecture
| Others |
| WSA | Web Site Auditor
| Others |
| WSA | Web Software Applications
| Others |
| WSA | Web Standards Awards
| Others |
| WSA | Weekend Student Adventures
| Others |
| WSA | Wesleyan Student Assembly
| Others |
| WSA | Westchester Skating Academy
| Others |
| WSA | Western South America
| Others |
| WSA | Western Student Association
| Others |
| WSA | Western Surfing Association
| Others |
| WSA | Westminster Schools of Augusta
| Others |
| WSA | Whinning Sunglass A
| Others |
| WSA | White Student Alliance
| Others |
| WSA | Why So Angry
| Others |
| WSA | Williams Syndrome Association
| Others |
| WSA | Windows Server Administration
| Others |
| WSA | Windows Server App
| Others |
| WSA | Windows Sockets Api
| Others |
| WSA | Windows Sockets Asynchronous
| Others |
| WSA | Wiper System
| Others |
| WSA | Wire Subscriber Access
| Others |
| WSA | Wireless Security Auditor
| Others |
| WSA | Wisconsin Student Association
| Others |
| WSA | Women's Student Association
| Others |
| WSA | Work Space Awareness
| Others |
| WSA | Workers Solidarity Alliance
| Others |
| WSA | Workspace Architecture
| Others |
| WSA | World Service Authority
| Others |
| WSA | World Sign Associates
| Others |
| WSA | World Snowmobile Association
| Others |
| WSA | Worldwide Spirit Association
| Others |
| WSA | Wow Strong Arms
| Others |
| WSA | Writing Skills Assessment
| Others |