| Acronym | Definition |
|---|
| WSIS➣World Summit on the Information Society |
| WSIS➣Who Should I Start? (fantasy football) |
| WSIS➣Waste Stream Information Sheet |
| WSIS➣White Smoke Identification System (US Navy) |
| WSIS➣Workplace Safety and Insurance System (Canada) |
| WSIS➣Whiplash Shaken Infant Syndrome (child neurology) |