| Abbreviation | Definition |
|---|---|
| MM | Mass Mailer |
| MM | Modigliani and Miller economic theory |
| MM | Monthly Mean |
| MM(s) | middle manager(s) |
| MMA | Manual Metal Arc |
| MMB | Medium-sized Corporate Market Bremen |
| MMBTU | Million British Thermal Units |
| MMD | Municipal Market Data |
| mmddyy | month day year |
| MMDI | Measurement Methods and Data Improvement |
| MMF | Money Market Fund |
| MMFS | M Melnick Financial Services |
| MMFS | Mahindra and Mahindra Financial Services |
| MMG | medical management guidelines |
| MMKT | Mass Market |
| MMM | Minimal Manager Management |
| MMO | Materials Management Office |
| MMO | MEMOrandum |
| MMOP | Middle Management Orientation Program |
| MMOP | Mitigation Monitoring and Operating Plan |