| Abbreviation | Definition |
|---|---|
| MFJ | Modified Final Judgement |
| MFPC | Matson Freyvogel, PC, Law Firm |
| MFR | Motion For Relief |
| MG | More Grief |
| MGIA | Midwest Gang Investigators Association |
| MGJ | Mobilization For Global Justice |
| MGL | Massachusetts General Laws |
| MGM | Mentally Gifted Minor |
| MGM | Mentally Goofy Man |
| MGT | Mis Guided Thugs |
| MHA | Mental Health Act |
| 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 |