| Abbreviation | Definition |
|---|---|
| MPIAA | Metropolitan Police Ibero-American Association |
| MPICT | Master of Policing Intelligence and Counter Terrorism |
| MPID | Military Police Investigations Division |
| MPL | Main Police Labor |
| MPOA | Merced Police Officers Association |
| MPOA | Merced Police Officers' Association |
| MPOA | Municipal Police Officers Association |
| MPOE | Main Point Of Entry |
| MPPA | Montana Police Protective Association |
| MPPD | Manassas Park Police Department |
| MPPD | Melrose Park Police Department |
| MPPD | Monterey Park Police Department |
| MPPD | Mount Prospect Police Department |
| MPS | Maldives Police Service |
| MPS | Metropolitan Police Service |
| MPS | Midland Police Service |
| MPS | Ministry of Public Security |
| MPSA | Metropolitan Police's Sikh Association |
| MPSB | Metropolitan Police Special Branch |
| MPSGPA | Metropolitan Police Staff Greek Police Association |