| Acronym | Meaning |
 | MTR | Motor |
| MTS | Magnetic Tape Station (System) |
| MTS | Master Timing System |
| MTS | Metric Time System |
| MTT | Maximum Touch Temperature |
| MTTA | Mean Time To Accomplish |
| MTTE | Mean Time To Exchange |
| MTTF | Mean Time To Failure |
| MTTFF | Mean Time To First Failure |
| MTTR | Mean TimetoRepair |
| MTU | Magnetic Tape Unit |
| MTU | Master Timing Unit |
| MTU | Master Timing Unit |
| MTU | MobileTrainingUnit |
| MTVC | Manual Thrust Vector Control |
| MTVC | Manual Thrust Vector Control |
| MTW | MaximumTaxiWeight |
| MU | Master Unit |
| MU | Mobile Unit |
| MU | Mockup |
| MU | Multiple Unit |
| MUA | Material(s) Usage Agreement |
| MUA | Maximum Usable Altitude |
| MUF | Maximum Usable Frequency |
| MULT | Multiple |
| MULT | Multiply |
| MUMS | Multiple Use Marc System |
| MUR | Manpower Utilization Report |
| MUSAT | Canadian Government Satellite |
| MUSS | Module Utility Support Structure |
| MUX | Multiplex |
| MV | Manual Valve |
| MV | Manufacturing Verification |
| MV | Millivolt |
| MVA | Main Valve Actuator |
| MVA | Megavolt Ampere |
| MVAS | Multipurpose Ventricular Actuating System |
| MVC | Manual VolumeControl |
| MVC | Master VolumeControl |
| MVF | Manned Vertical Flight |
| MVGVT | Mated Vertical Ground Vibration Test |
| MVM | MarinerVenus/Mercury |
| MVP | Master Verification Plan |
| MVR | Maneuver |
| MVS | Middle Value Select |
| MVS | Multiple Virtual Storage |
| MVT | Mission Verification Test |
| MW | Mmw Microwave |
| MW | Mmw Milliwatt |
| MW | Man Week |
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