| Acronym | Definition |
|---|
| UDSP➣Union Départementale des Sapeurs-Pompiers (French: Departmental Union of Firefighters; various locations) |
| UDSP➣Union for Democracy and Social Progress |
| UDSP➣University District Service Providers (Seattle, Washington) |
| UDSP➣Utility Decision Support Platform |
| UDSP➣Understanding Digital Signal Processing (book) |