| Abbreviation | Definition |
|---|---|
| MBCS | Motion-Base Crew Station (SMS) |
| MBFP | Manufacturing Build and Flow Plan |
| MBI | Multibus Interface |
| MBI | Multi-Bus Interface |
| MBK | Medications and Bandage Kit |
| MBL | MicroSAT Boot Loader |
| MBL | MoBiLe Unit (TACAN Station) |
| MBO | Management by Objective |
| MBO | Management By Objectives |
| MBPS | MegaBits Per Second |
| MBS | Mobile Base System |
| MBSU | Main Bus Switching Unit |
| MBV | Main Base Visit |
| MC | Mars Crosser |
| MC | Memory Configuration |
| MC | Midcourse Correction Maneuver |
| MC | Mission Capability |
| MC | Mission Completion |
| MC&C | Measurement, Command, and Control |
| MC&W | Master Caution and Warning |