| Acronym | Definition |
|---|
| WSTI➣Wisconsin Statewide Transition Initiative |
| WSTI➣Workshop on Security of Information Technologies (annual conference) |
| WSTI➣Wide Area Surveillance Thermal Imager |
| WSTI➣Western Star Trucks, Inc. (British Columbia, Canada) |
| WSTI➣Wyzsza Szkola Technologii Informatycznych (Polish: Higher School of Information Technology; Katowicach, Poland) |
| WSTI➣Welded Steel Tube Institute (Cleveland, OH) |