| Abbreviation | Definition |
|---|---|
| PMS | Processor Memory Switch |
| PMS | Project Management System |
| PMT | Photomechanical Transfer |
| PMT | Photomultiplier Tube |
| PMT | Project Management Team |
| PMW | Product Maintenance Window |
| PMZ | Poor Man's Zope |
| PNG | Pacific Northwest Gigapop |
| PNG | PNG's Not GIF |
| PNK | Petri Net Kernel |
| PNL | Precisiated Natural Language |
| PNM | Progressive Networks Metafile |
| PNN | Probabilistic Neural Network |
| PNNI | Private Network To Network Interface |
| PO | Primary Output |
| PO | PrintOut |
| POA | Portable Object Adapter |
| POC | Program-Operator Communication |
| POD | Performance Optimized Datacenter |
| POD | Plain Old Documentation |