WSS
- W2S
- WS (disambiguation)
- WS-Security
- WS2 (disambiguation)
- WSSS (disambiguation)
- WWS (disambiguation)
- War of the Spanish Succession
- Warehouse shoe sale
- Washington Statistical Society
- Wavelength Selective Switching
- WebSideStory
- WebSocket
- Weekly Shōnen Sunday
- Wellington Secondary School
- Westdale Secondary School
- Western Shugden Society
- While She Sleeps
- White spot syndrome
- Whitley Secondary School
- Wide sense stationary
- Widescreen signaling
- Windows SharePoint Services
- Windows Sound System
- Winston-Salem Southbound Railway
- Working Set Size
- World Schools Style debate
- World Ship Society