| OPMS | Oak Park Middle School 
| Others |
| OPMS | Officer Personnel Management System
| Others |
| OPMS | Officer Professional Management System
| Others |
| OPMS | Olive Peirce Middle School
| Others |
| OPMS | On Premise Monitoring Stations
| Others |
| OPMS | One Page Management System
| Others |
| OPMS | Online Performance Management System
| Others |
| OPMS | Online Project Monitoring System
| Others |
| OPMS | Online Property Management Software
| Others |
| OPMS | Onsite Personnel Management Systems
| Others |
| OPMS | Optical Position Measurement System
| Others |
| OPMS | Optimized Plant Mediated Solutions
| Others |
| OPMS | Optimized Plant Medicated Solution
| Others |
| OPMS | Oral Pharyngeal Motility Studies
| Others |
| OPMS | Orchard Park Middle School
| Others |
| OPMS | Organic Pest Management Solutions
| Others |
| OPMS | Organic Purified Mitragyna Speciosa
| Others |
| OPMS | Organically Purified Mitragyna Speciosa
| Others |
| OPMS | Orleans Parish Medical Society
| Others |
| OPMS | Orthodontic Practice Management Software
| Others |
| OPMS | Orthodontic Practice Management System
| Others |
| OPMS | ORTHOWARE Practice Management Software
| Others |
| OPMS | Out Patient Management System
| Others |