| Abbreviation | Definition |
|---|---|
| OMFTS | Operational Maneuver From The Sea |
| OMG | Operation Market- Garden |
| OMG | Operational Maneuver Group |
| OMGB | Office of Military Government for Bavaria |
| OMGUS | of the Military Governor United States |
| OMGUS | Office of Military Government United States |
| OMGUS | Office of the Military Government (U.S.) |
| OMI | Oakland Military Institute |
| OMK | Ohio Military Kids |
| OMK | Operation Military Kids |
| OMK | Outreach to Military Kids |
| OML | Operational Medical Logistics |
| OMLB | Old Man Lunch Brigade |
| OMLB | Originating Message Line Block |
| OMLB | Originating Message Line Blocks |
| OMM | Operations and Maintenance, Marine Corps |
| OMMC | Organization of Military Museums of Canada |
| OMN | One Of Many Names |
| OMN | Operations and Maintenance, Navy |
| OMNG | Operation and Maintenance National Guard |