| Abbreviation | Definition |
|---|---|
| MFD | Main Feed |
| MFD | Malfunction Detection |
| MFE | Mid Frequency Executive |
| MFE | Mid-Frequency Executive |
| MFF | MDM (Manipulator Deployment Mechanism) Flight Forward |
| MFG | Major Functional Group |
| MFMR | Multi-Frequency Microwave Radiometer |
| MFO | Major Function Overlay |
| MFPE | Mission From the Planet Earth |
| MFR | Manipulator Foot Restraint |
| MFR | Maximum Flight Rate |
| MFR | Multi-Functional Receiver |
| MFR | Multi-Functional Review |
| MFT | Mean Flight Time |
| MFTAD | Master Flight Test Assignment Document |
| MFV | Main Fuel Valve |
| Mg | Magnesium |
| MG | Middle Gimbal |
| mG | MilliGram |
| MG | Mobile Generator |