| Abbreviation | Definition |
|---|---|
| MSBLS | Microwave Scanning Beam Land Station |
| MSBLS | Microwave Scanning Beam Landing System |
| MSBLS-GS | MSBLS (Microwave Scan Beam Landing System) Ground Station |
| MSBLS-GS | MSBLS Ground Station |
| MSC | Manned Spacecraft Center |
| MSC | Manned Spacecraft Center (changed to JSC) |
| MSC | Master Sequence Controller |
| MSC | Materials Service Center |
| MSC | Mobile Servicing Center |
| MSC | Moding Sequencing and Control |
| MSCC | Manned Systems Control Center |
| MSCI | Mission Scientist |
| MSCI | Mississippi Space Commerce Initiative |
| MSCR | Measurement/Stimuli Change Request |
| MSD | MARS Supplemental Data |
| MSDS | Multi-spectral Scanner and Data System |
| MSE | Maintenance Support Equipment |
| MSE | Measuring and Stimuli Equipment |
| MSE | Mechanical Support Equipment |
| MSE | Mechanically Stabilized Earth |