| 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 | Corel Paint Shop Pro Polished Stone Preset |
| 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 |
| pp2 | PingPlotter Exported Data |
| pp2 | Poser Props Data |
| pp3 | PlanetPress Suite Form Data |
| pp3 | RawTherapee Sidecar File |
| ppass | ParaPass Keystore |
| ppd | Polar ProTrainer Person Data |
| ppd | ProfiCAD Symbol Data |
| ppf | EdgeCAM Pathtrace Part Data |
| ppf | Micrografx Picture Publisher Image |
| ppf | PPF-O-Matic Patch |
| pphe | PLINK Phenotype Permutations Data |
