| Abbreviation | Definition |
|---|---|
| ODV | Omni-Directional Vehicle |
| ODW | Operation Dangerous Wind |
| ODZ | Outer Defense Zone |
| OE | Operational Element |
| OE | Operational Environment |
| OE | Operationally Effective |
| OE | Organizational Effectiveness |
| OE | Overseas Experience |
| OEBGD | Overseas Environmental Baseline Guidance Document |
| OEC | Operational Evaluation Command |
| OED | Operational Effectiveness Demonstration |
| OED | Operations Evaluation Department |
| OEF | Operation Enduring Freedom |
| OEG | Occluded Eye Gunsight |
| OEG | Operational Experts Group |
| OEG | Operational Exposure Guide |
| OEG | Operations Security (OPSEC) Executive Group |
| OEH | Occupational and Environmental Health |
| OEL | Original Equipment List |
| OEM | Program Manager, OPTADS (Integrator) |