| Acronym | Definition |
|---|
| USPP➣United States Park Police (National Park Service) |
| USPP➣Upper San Pedro Partnership (Sierra Vista, AZ) |
| USPP➣United States Pathway Program (various schools) |
| USPP➣United States Pacifist Party |
| USPP➣Ultra-Short-Period Planet (extrasolar) |
| USPP➣United States Private Placement |
| USPP➣Utility Service Protection Plan |
| USPP➣Universal Service Preservation Plan (Nynex) |
| USPP➣United States Pirate Party |
| USPP➣United for Sanitary Paper Products (Egypt) |