| Abbreviation | Definition |
|---|---|
| MBE | Molecular Beam Epitaxy |
| MBE | My Bloody Effort |
| MBF | Main Battle Figure |
| MBGE | Missile-Borne Guidance Equipment |
| MBI | Major Budget Issue |
| MBI | Military Ballistic Industries |
| MBMD | Maritime Ballistic Missile Defense |
| MBMMR | Multi-Band Multi-Mode Radio |
| MBMR | Multi-Band Multimode Radio |
| MBO | Maintenance and Building Officer |
| MBO | Management By Orders |
| MBO | Monterey Bay Operations |
| MBO | Muslim Bosnian Organisation |
| MBODD | Mobilization Origin Departure Date |
| MBPO | Military Blood Program Office |
| MBR | Main Battle Rifle |
| MBRP | Military Burn Research Program |
| MBRR | Magnetic Bubble Recorder-Reproducer |
| MBS | Main Battle Ship |
| MBS | Maximum Burst Size |