| Abbreviation | Definition |
|---|---|
| MO | Maintenance and Operation |
| MO | Mega-Octet (Megabyte) |
| MO | Meta Object |
| MOA | Macromedia Open Architecture |
| MOCAP | Motion Capture |
| MODEM | MOdulator/DEModulator |
| MOF | Managed Object Format |
| MOF | Meta Object Facility |
| MOLAP | Multidimensional On Line Analytical Processing |
| MON | Monitor |
| MOP | Multiple Original Printout |
| MOPS | Metrics, Operational tools, Processes, and Standards |
| MOPV | Mainframe Output Product Viewing |
| MORE | Multimedia Oriented Repository Environment |
| MOS | Microsoft Office Specialist |
| MOS | Network Operating System |
| MOSGA | Medical Outcomes Study General Adherence |
| MOSPA | Microsoft Online Services Partner Agreement |
| MOSS | MAC Operating System Startup |
| MOSTT | Multimedia Operations Support And Training Technology |