| Abbreviation | Definition |
|---|---|
| MO | Momentum On |
| MO | MOve |
| MO&DSD | Mission Operations and Data Systems Directorate |
| MOA | Make On Arrival |
| MOA | Minute-Of-Angle |
| MOA | Mission Operations Area |
| MOAR | MPLM (Multi-Purpose Logistics Module) Overhead Access Rig |
| MOC | Maritime Operations Center |
| MOC | Mars Orbiter Camera |
| MOC | Mission Operations Center |
| MOCA | Mars Organic Carbon Analyzer |
| MOCC | Mission Operations Control Center |
| MOCF | Mission Operations Computational Facilities |
| MOCR | Mission Operations Control Room |
| MOCS | Multichannel Ocean Color Sensor |
| MOCV | Manual O2 Control Valve |
| MOD | Mission Objectives Document |
| MOD | Mission Operations Directorate |
| MOD | Mission Operations Division |
| MOD | Modification |