| Abbreviation | Definition |
|---|---|
| PSK | Personal Survival Kit |
| PSL | Parallel Track Single-Unit Long-Range Aid to Navigation (LORAN) |
| PSL | Problem Statement Language |
| PSM | Persistent Stored Modules |
| PSM | Personnel Status Monitor |
| PSM | Please See Me |
| PSMS | Personnel Status Monitoring System |
| PSN | Packet Switching Network |
| PSN | Packet Switching Node |
| PSN | Public Switch Network |
| PSN | Public Switched Network |
| PSNCO | Personnel Staff NCO |
| PSNCO | Personnel Staff Non-Commissioned Officer |
| PSO | Peace Support Operation |
| PSO | Peace Support Operations (NATO) |
| PSO | Post Security Officer |
| PSP | Perforated Steel Planking |
| PSP | Polizei Sicherheits Pistole |
| PSP | Portable Sensor Platform |
| PSP | Power Support Platform |