| Abbreviation | Definition |
|---|---|
| OPN | Operations |
| OPN | Order Part Number |
| OPN | Ordering Part Number |
| OPP | Ontario Pension Plan |
| OPP | Oracle Partner Program |
| OPP | Organizational Product Point |
| OPP | Other People's Products |
| OPP | Other Peoples' Products |
| OPP | Other People's Programs |
| OPP | Other Peoples' Programs |
| OPP | Out Of Product Program |
| OPP | Overquota Products for Projects |
| oppty | opportunity |
| OPQ | Oficina per la Promoció de la Qualitat |
| OPR | Office Procedures Reinforcement |
| OPR | Overly Priced Rooms |
| OPS | Other Personnel Services |
| OPS | Overall Performance Study |
| OPS2 | Second Overall Performance Study |
| OPS3 | Third Overall Performance Study |