OPPS
| Acronym | Definition |
|---|---|
| OPPS | Outpatient Prospective Payment System (hospital/medical) |
| OPPS | Over Pressure Protection System |
| OPPS | Operation Primary Physical Science (est. 1995; National Science Foundation) |
| OPPS | Online Predator Profiling System |
| OPPS | Oncology Practice Pattern Study |
| OPPS | Odrodzona Polska Partia Socjalistyczna (Polish: Revived Polish Socialist Party) |