| pob | Punch! Home Design 3D Object |
| pob | Zemax Polygon Object Data |
| poc | PocoMail PocoScript |
| poco | Apple Guide POCO Data |
| podcast | JRiver Media Center Podcast |
| pof | Altera Programmer Object File |
| poi | BrainVoyager QX Patches-of-interest Data |
| poi | General POI Database |
| pok | Spectrum Games Database POKE Data |
| pol | AscToHTM Policy Data |
| pol | InnovMetric Polyworks Modeler 3D Model |
| pol | Personal Paint Polish Language Data |
| pol | Unreal Engine Polish Language Data |
| policy | Opera Policy Data |
| poly | RMCProfile Polyhedral Restraints Data |
| polys | Ribbons Polygon Definition |
| pont | Protege Classes Data |
| pool | TeX Pool Data |
| pop | dBASE Popup Menu Data |
| pop | Pegasus Mail POP3 Session Log |
| popshape | PopChar Character Shape Data |
| por | Corel Painter Portfolio Data |
| por | eSignal Portfolio Data |
| por | SPSS Statistics Portable |
| pos | BrainVoyager QX Slice Positioning Data |
| pos | Corel Paint Shop Pro Polished Stone Preset |
| pos | NimbleGen Positions Data |
| pos | Orgadata LogiKal POS Data |
| pos | STK Position File |
| post | Light Post |
