| Abbreviation | Definition |
|---|---|
| PLY | ZipPack |
| PM | Perl |
| PM | Personal Mobility |
| PM | Presentation Manager Bitmap graphics file |
| PM | X Window PixelMap 8-bit text Bitmap graphics |
| PM3 | Document (PageMaker 3) |
| PM4 | PageMaker 4 Document |
| PM5 | Document (PageMaker 5) |
| PM6 | Document (PageMaker 6) |
| PMA | Data (Performance Monitor) |
| PMC | A4TECH Scanner Graphics |
| PMC | Performance Monitor Data |
| PMD | Polarization Mode Dispersion |
| PMI | Program manager information (OS/2) |
| PML | Data (Performance Monitor) |
| PMM | Amaris BTX/2 Program file |
| PMR | Performance Monitor Data |
| PMW | Data (Performance Monitor) |
| PN3 | Harvard Graphics 3.0 Printer device driver |
| PNF | Bitmap graphics (Portable Network graphics Frame) (standalone stream) |