| Abbreviation | Definition |
|---|---|
| OSD | Office of the Secretary of Defense |
| OSD | Office of the Secretary of Defense; Over, Short and Damaged Report |
| OSD | Officer on Special Duty |
| OSD | Operating Strength Deviation |
| OSD | Operational Sequence Diagram |
| OSDP | On-Board Signal and Data Processor |
| OSE | On Scene Endurance |
| OSE | Open Systems Environment |
| OSE | Operations Support Element |
| OSEI | Operational Significant Event Imagery |
| OSF | Object Strike Force |
| OSF | Observed Support Frequency |
| OSF | On Scene Forces |
| OSF | Open Software Foundation |
| OSF | Operational Support Facility ( Orlando) |
| OSG | Operational Security Guidelines |
| OSG | Operational Support Group |
| OSG | Operations Support Group |
| OSGP | Operations Support Group Prototype |
| OSI | Open Systems Interconnection |