| 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) |