| 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 |
| 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 |
| 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 | NimbleGen Positions Data |
| pos | STK Position File |
| post | Yahoo! Messenger Post Data |
| postal | TomTom Postal Code Database |
| postinst | Debian Package Post-installation Script |
| postrm | Debian Package Post-removal Script |
| pot | CASIA-OLHWDB 1.0 Page Data |
| pot | FractInt Continuous Potential Bitmap |
| potmenx | Egis Encrypted Powerpoint POTM Template |
| pov-state | POV-Ray State File |
| pow | WAsP Power Curve |
| poz | Poser 1.0 Scene |
| pp | Topocad Polygon Point Coordinate Data |
