| MPSA | Los Santos Augusto Vergara, Panama 
| Others |
| MPSA | MAcc Program Student Association
| Others |
| MPSA | Machine Process Safety Assessment
| Others |
| MPSA | Magnitudes Per Square Arcsecond
| Others |
| MPSA | Malta Pharmaceutical Students' Association
| Others |
| MPSA | Managed Print Services Association
| Others |
| MPSA | Management Plan Skills Assessment
| Others |
| MPSA | Master of Public Service and Administration
| Others |
| MPSA | Metropolitan Police's Sikh Association
| Others |
| MPSA | Microsoft Personal Security Advisor
| Others |
| MPSA | Microsoft Product and Services Agreement
| Others |
| MPSA | Microsoft Products and Service Agreement
| Others |
| MPSA | Microsoft Products and Services Agreement
| Others |
| MPSA | Microsoft Products and Services Agreements
| Others |
| MPSA | Microsoft Products Services Agreement
| Others |
| MPSA | Midtown Ponce Security Alliance
| Others |
| MPSA | Midwest Political Science Association
| Others |
| MPSA | Military Postal Service Agency
| Others |
| MPSA | Military Postal Service Agnecy
| Others |
| MPSA | Mineral Production Sharing Agreement
| Others |
| MPSA | Mississippi private school association
| Others |
| MPSA | Mobile Payment Services Association
| Others |
| MPSA | Multi Port Serial Adapter
| Others |
| MPSA | Multiprocessor Parallel Server Architecture
| Others |
| MPSA | Museum Planning Services Australia
| Others |