| Rank | Abbreviation | Meaning |
|---|
| ***** | OPMA | Office Products Manufacturers Association
| |
| ***** | OPMA | Open Platform Management Architecture
| |
| ***** | OPMA | Open Pit Mining Association
| |
| ***** | OPMA | Office of Program Management and Administration
| |
| ***** | OPMA | Overseas Press and Media Association
| |
| **** | OPMA | On Board Performance Monitoring and Alerting
| |
| **** | OPMA | Oregon Petroleum Marketers Association
| |
| *** | OPMA | Oregon Project Management Associate
| |
| *** | OPMA | Operations and Plant Managers Association
| |
| *** | OPMA | Office of Policy and Management Analysis
| |
| *** | OPMA | Operations Management
| |
| *** | OPMA | Ohio Petroleum Marketers Association
| |
| *** | OPMA | Open Public Meetings Act
| |
| *** | OPMA | Oklahoma Petroleum Marketers Association
| |
| ** | OPMA | Osaka Pharmaceutical Manufacturers Association
| |
| * | OPMA | Ohio Podiatric Medical Association
| |
| * | OPMA | Oklahoma Podiatric Medical Association
| |
| * | OPMA | Ontario Podiatric Medical Association
| |
| * | OPMA | Ontario Produce Marketing Association
| |
| * | OPMA | Oceanside Police Management Association
| |
| * | OPMA | Oregon Park Managers Association
| |
| * | OPMA | Okanogan Producers Marketing Association
| |
| * | OPMA | Oregon Property Managers Association
| |
| * | OPMA | Ontario Pharmaceutical Marketing Association
| |