| PSIM | Pakistan Society of Internal Medicine 
| Others |
| PSIM | Physical Security Information Management
| Others |
| PSIM | Physical Security Integration Management
| Others |
| PSIM | Plan de Saneamiento Integral de Madrid
| Others |
| PSIM | Podkarpackiego Systemu Informacji Medycznej
| Others |
| PSIM | Potentially Secure Information Medium
| Others |
| PSIM | Power Supply Interface Module (various companies)
| Others |
| PSIM | Public Safety Incident Management
| Others |