USSP
| Acronym | Definition |
|---|---|
| USSP | User Space Serial Port |
| USSP | Union du Sport Scolaire Polynésien (French: Polynesian School Sport Union) |
| USSP | United States Special Police (Washington, DC) |
| USSP | Uncontrolled Slip Seconds - Path (Telabs) |
| USSP | United States Scouting Service Project |