| Abbreviation | Definition |
|---|---|
| MGT | Mis-Guided Thug |
| MHA | Mental Health Act |
| MHAA | Mental Health Act Administrator |
| MHLS | Mental Hygiene Legal Services |
| MHRA | Minnesota Human Rights Act |
| MHS | Message Handling Switch |
| MI | Malicious Intent |
| MI | Masked Intruder |
| MI | Mentally Insane |
| MIA | Murderers In Action |
| MIB | Man In Block |
| MIB | Men In Blue |
| MIBS | Minimally Invasive Brain Stimulation |
| MIC | Minor In Consumption |
| MICA | Mentally Ill Chemical Abuser |
| MICAP | Mental Illness Court Alternative Program |
| MICIC | Migrants In Country In Crisis |
| MICR | Michigan Incident Crime Reporting |
| MICT | Mechanism for International Criminal Tribunals |
| MIFL | Modified Integrated Force Law |