| Abbreviation | Definition |
|---|---|
| MRG | Movement Requirements Generator |
| MRI | Meals, Ready to eat, Individual |
| MRI | Military Related Intelligence |
| MRIC | Medium Range Insertion Craft |
| MRIN | Military Relocation Information Network |
| MRIP | Munitions Rule Implementation Plan |
| MRIS | Modernization Resource Information Submission |
| MRJ | Midship Runabout Joyful |
| MRL | Master Requirements List |
| MRL | Materiel Requirements List |
| MRL | Multiplerocket Launcher |
| MRLA | Malayan Races Liberation Army |
| MRLS | Multiple Rocket Launcher System |
| MRM | edium Range Missile |
| MRM | Medium Range Missile |
| MRMA | Midlands Retired Military Association |
| MRMC | US Army Medical Research and Materiel Command |
| MRO | Maintenance Repair and Operations |
| MRO | Maintenance, Repair, and Overhaul |
| MRO | Mass Rescue Operation |