| Abbreviation | Definition |
|---|---|
| MPR | Superior Court Mental Proceedings Rules (court rules) |
| MPS | Metro Police Squad |
| MPT | Manner, Place, Time |
| MPT | Multistate Performance Test ( Bar exam) |
| MR | Master of the Rolls |
| MRLC | Mekong Region Law Center |
| MRLC | Mekong Regional Law Center |
| MRLS | Master of Resources Law Studies |
| MRO | Medicaid Rehab Option |
| MRSC | Municipal Research & Services Center of Washington |
| MRT | Moral Recognition Therapy |
| MRTA | Marketable Record Title Act |
| MS | Midnight Special |
| MS | Most Specific |
| MS | Mystery Solved |
| MSA | Marital Settlement Agreement |
| MSA | Master Settlement Agreement |
| MSAU | Mallee Sexual Assault Unit |
| MSBA | Maine State Bar Association |
| MSBA | Maryland State Bar Association |