| Abbreviation | Definition |
|---|---|
| OMS | Output Management System |
| OMS | Ownership Management System |
| OMSC | Order Management Solutions Center |
| OMT | Official Management Term |
| OMT | Onderwijs Management Team |
| OMTS | Order Management and Trading System |
| OMTT | Onderwijs Management Team Tandheelkunde |
| OMW | Object Management Workbench |
| OMW | Osteoporosis Management in Women |
| ONM | Open Network Management |
| ONM | Optical Network Management |
| ONMS | Open Network Management System |
| OOBM | Out-Of-Band Management |
| OOEM | Oregon Office of Emergency Management |
| OOMAB | Office Of Management And Budget (US government; usually seen as OMB) |
| OOMM | out of mind management |
| OOMS | Office of Organization and Management Support |
| OPC | Operations Procurement Contracts |
| OPGM | Office Of Procurement And Grants Management |
| OPGM | Office Of Procurement Grants Management |