| Abbreviation | Definition |
|---|---|
| ORMIS | Operational Risk Management Information System |
| ORMS | Open Reputation Management System |
| ORMS | Operational Resource Management System |
| ORMS | Oregon Record Management Solution |
| ORMS | Organizational Resilience Management System |
| ORTM | Outdoor Recreation and Tourism Management |
| OSAM | O Shaughnessy Asset Management |
| OSAM | Oregon Society of Association Management |
| OSFM | Oracle Shop Floor Management |
| OSIM | Orenburg State Institute of Management |
| OSIM | Organizations Strategy and International Management |
| OSLM | Optical Service Level Management (LuxN) |
| OSM | Office of Spectrum Management |
| OSM | On Site Management |
| OSM | Online Salary Management |
| OSM | Ship Management |
| OSMDP | Office of the Secretary Management Development Program |
| OSMDP | Operations and Sourcing Management Doctoral Program |
| OSMS | Office of Space Management Support |
| OSMS | Officer Specialty Management System |