| Acronym | Definition |
|---|
| WSO➣World Service Office (Narcotics Anonymous) |
| WSO➣Williams Students Online |
| WSO➣Web Shared Object |
| WSO➣Workstation Object |
| WSO➣Web Services Object |
| WSO➣Windows System Optimizer |
| WSO➣World Sikh Organization |
| WSO➣Winnipeg Symphony Orchestra |
| WSO➣Weather Service Office |
| WSO➣World Safety Organization |
| WSO➣Web Site Optimization |
| WSO➣Warrior Special Offer |
| WSO➣Wilcox Solar Observatory |
| WSO➣Waseda Symphony Orchestra (Waseda University; Japan) |
| WSO➣Web Site Overseer |
| WSO➣Western Sydney Orbital (Sydney, Australia metro area road network) |
| WSO➣Windows Startup Online (Histon, UK) |
| WSO➣Wing Staff Officer |
| WSO➣Warwick Symphony Orchestra (Warwick, RI) |
| WSO➣West Sussex Opera (UK) |
| WSO➣Waukegan Symphony Orchestra (Waukegan, IL) |
| WSO➣Weapon System Operator/Officer |
| WSO➣WAN Systems Organization (Intel) |
| WSO➣Wire Serving Office |
| WSO➣Watershed Overlay |
| WSO➣Washington Standardization Officers |
| WSO➣Washington Symphonic Orchestra (Washington, PA) |
| WSO➣Waynesboro Symphony Orchestra (Waynesboro, VA) |