| Rank | Abbreviation | Meaning |
|---|
| ***** | PSIM | Phase Shift Interference Microscope
| |
| ***** | PSIM | Physical Security Information Management
| |
| *** | PSIM | Periodically Shifted Interleaved Memory
| |
| ** | PSIM | Power Supply Interface Module
| |
| ** | PSIM | Phase Shifting Interferential Microscopy
| |
| ** | PSIM | Programmable Synthesizer Interface Module
| |
| * | PSIM | Power System Instrumentation and Measurement
| |
| * | PSIM | Pump Systems Improvement Modeling Tool
| |
| * | PSIM | Process Safety Integrity Management
| |
| * | PSIM | Public Safety Incident Management
| |
| * | PSIM | Payload Support and Interface Module
| |
| * | PSIM | Philosophy and the Scientific Image of Man
| |
| * | PSIM | Public Services Info Management
| |
| * | PSIM | Private Sector Investment Management
| |
| * | PSIM | Provider of the Situation Management
| |
| * | PSIM | Pinnacle Software In Montreal
| |
| * | PSIM | Pacific Spirit Investment Management
| |
| * | PSIM | Philadelphia School of Irish Music
| |
| * | PSIM | PUBLIC SERVICE INVESTMENT and MANAGEMENT CORP.
| |
| * | PSIM | Pressure Systems Integrity Management
| |