| Abbreviation | Definition |
|---|---|
| OSMS | Online School Management System |
| OSMS | Online School Management Systems |
| OSMS | Owl ScanFile Management System |
| OSP | Outsourcing Service Providers |
| OSPM | Office of Strategic Planning and Management |
| OSPM | Operating System Power Management |
| OSVM | Open Source Vulnerability Management |
| OSVM | OPNFV Security Vulnerability Management |
| OTBE | Overtaken By Events |
| OTM | Office of Technology Management's |
| OTM | Operations and Technology Management |
| OTMO | Office of Technical Management and Operations |
| OTMP | Organization Time Management and Planning |
| OTMS | Object Transaction Management System |
| OTO | Opportunity To Order |
| OTPM | Orion Training and Performance Management |
| OUM | Office of Urban Management |
| OVMSA | Offshore Vessel Management and Self-Assessments |
| OWBM | One World Brand Management |
| OWM | Office of Wastewater Management |