| Abbreviation | Definition |
|---|---|
| MRCOA | Military Registered Civil Owned Aircraft |
| MRCS | Military Rehabilitation and Compensation Scheme |
| MRD | Motorized Rifle Division |
| MRDB | Materiel Returns Database |
| MRDC | Medical Research and Development Command |
| MRDEC | Missile Research, Development, and Engineering Command |
| MRDFS | Man Portable Radio Direction Finding System |
| MRE | A Military Ration Envelope |
| MRE | Meal, Ready to Eat |
| MRE | Meal, Ready-To-Eat |
| MRE | Military Reporters And Editors |
| MREP | Military Reserve Exchange Program |
| MRF | Maintenance/ Repair Form |
| MRF | Medical Response Force |
| MRF | Military Racquetball Federation |
| MRF | Military Research Facility |
| MRFF | Military Religious Freedom Foundation |
| MRG | Message Routing Guide |
| MRG | Message Routing Guides |
| MRG | Mission Requirements Group |