| Extension | File Description |
| .PHA | Uncommon Files |
| .PHANTASM | Uncommon Files |
| .PHAPACK | Uncommon Files |
| .PHASER | Uncommon Files |
| .PHB | Settings Files |
| .PHC | Uncommon Files |
| .PHD | Data Files |
| .PHE | Uncommon Files |
| .PHF | Uncommon Files |
| .PHG | Uncommon Files |
| .PHH | Uncommon Files |
| .PHI | Uncommon Files |
| .PHIST | Uncommon Files |
| .PHJ | Uncommon Files |
| .PHK | Uncommon Files |
| .PHL | Misc Files |
| .PHM | Data Files |
| .PHN | Game Files |
| .PHO | Audio Files |
| .PHP | Web Files |
| .PHP3 | Web Files |
| .PHP4 | Web Files |
| .PHP5 | Web Files |
| .PHPR | Uncommon Files |
| .PHPS | Uncommon Files |
| .PHPT | Uncommon Files |
| .PHPW | Uncommon Files |
| .PHQ | Uncommon Files |
| .PHR | Uncommon Files |
| .PHS | Uncommon Files |
| .PHT | Uncommon Files |
| .PHTM | Web Files |
| .PHTML | Web Files |
| .PHU | Uncommon Files |
| .PHV | Uncommon Files |
| .PHW | Uncommon Files |
| .PHX | Uncommon Files |
| .PHY | Audio Files |
| .PHY2 | Uncommon Files |
| .PHYS | Uncommon Files |
| .PHYSAO | Uncommon Files |
| .PHZ | Game Files |
| .PH_ | Uncommon Files |
| .PI | Data Files |
| .PI$ | Uncommon Files |
| .PI0 | Uncommon Files |
| .PI1 | Raster Image Files |
| .PI2 | Raster Image Files |
| .PI2SHR | Uncommon Files |
| .PI3 | Raster Image Files |
| .PI3SHR | Uncommon Files |
| .PI4 | Raster Image Files |
| .PI5 | Raster Image Files |
| .PI6 | Raster Image Files |
| .PI7 | Uncommon Files |
| .PI8 | Uncommon Files |
| .PI9 | Uncommon Files |
| .PIA | Uncommon Files |
| .PIANO | Uncommon Files |
| .PIB | Uncommon Files |
| .PIC | Raster Image Files |
| .PIC1 | Uncommon Files |
| .PIC2 | Uncommon Files |
| .PIC3 | Uncommon Files |
| .PIC4 | Uncommon Files |
| .PIC5 | Uncommon Files |
| .PIC6 | Uncommon Files |
| .PIC8 | Uncommon Files |
| .PICCATA | Uncommon Files |
| .PICHAND | Uncommon Files |
| .PICIO | Uncommon Files |
| .PICON | Uncommon Files |
| .PICS | Uncommon Files |
| .PICT | Raster Image Files |
| .PICT1 | Uncommon Files |
| Extension | File Description |
| .PICT2 | Uncommon Files |
| .PICTCLIPPI | Raster Image Files |
| .PICTOR | Uncommon Files |
| .PICTURE | Uncommon Files |
| .pid | Uncommon Files |
| .PIE | Settings Files |
| .PIECE | Uncommon Files |
| .PIECES | Uncommon Files |
| .PIF | Executable Files |
| .PIFAST | Uncommon Files |
| .PIG | Game Files |
| .PIGG | Uncommon Files |
| .PIH | Uncommon Files |
| .PII | Uncommon Files |
| .PIJ | Uncommon Files |
| .PIK | Uncommon Files |
| .PIL | Uncommon Files |
| .PILE | Uncommon Files |
| .PIM | Compressed Files |
| .PIM1 | Uncommon Files |
| .PIN | GIS Files |
| .PINBALL1 | Uncommon Files |
| .PINBALL2 | Uncommon Files |
| .PINE | Uncommon Files |
| .PIO | Uncommon Files |
| .PIP | Settings Files |
| .PIPC | Uncommon Files |
| .PIPE | CAD Files |
| .PIPL | Uncommon Files |
| .PIQ | Uncommon Files |
| .PIQT | Uncommon Files |
| .PIR | Uncommon Files |
| .PIRA | Uncommon Files |
| .PIS | Uncommon Files |
| .PISI | Uncommon Files |
| .PISTE | Uncommon Files |
| .PIT | System Files |
| .PIU | Uncommon Files |
| .PIV | Video Files |
| .PIW | Uncommon Files |
| .PIX | Raster Image Files |
| .PIXAR | Uncommon Files |
| .PIXELPAINT | Uncommon Files |
| .PIY | Uncommon Files |
| .PIZ | Compressed Files |
| .PIZZA | Uncommon Files |
| .PI_ | Uncommon Files |
| .PJ | Game Files |
| .PJ0 | Uncommon Files |
| .PJ1 | Uncommon Files |
| .PJ2 | Uncommon Files |
| .PJ3 | Uncommon Files |
| .PJ4 | Uncommon Files |
| .PJ5 | Uncommon Files |
| .PJ6 | Uncommon Files |
| .PJ7 | Uncommon Files |
| .PJ8 | Uncommon Files |
| .PJ9 | Uncommon Files |
| .PJA | Uncommon Files |
| .PJB | Uncommon Files |
| .PJC | Uncommon Files |
| .PJD | Uncommon Files |
| .PJE | Uncommon Files |
| .PJF | Uncommon Files |
| .PJG | Uncommon Files |
| .PJH | Uncommon Files |
| .PJI | Uncommon Files |
| .PJJ | Uncommon Files |
| .PJK | Uncommon Files |
| .PJL | Uncommon Files |
| .PJM | Uncommon Files |
| .PJN | Uncommon Files |
| .PJO | Uncommon Files |
| .PJP | Uncommon Files |
| .PJPEG | Raster Image Files |
