| Extension | File Description |
| .PPRINT | Uncommon Files |
| .PPS | Data Files |
| .PPSENX | Uncommon Files |
| .PPSM | Data Files |
| .PPSMENX | Uncommon Files |
| .PPSX | Data Files |
| .PPSXENX | Uncommon Files |
| .PPT | Data Files |
| .PPTENX | Uncommon Files |
| .PPTHTML | Web Files |
| .PPTM | Data Files |
| .PPTMENX | Uncommon Files |
| .PPTX | Data Files |
| .PPTXENX | Uncommon Files |
| .PPU | Developer Files |
| .PPV | Uncommon Files |
| .PPW | Uncommon Files |
| .PPX | Page Layout Files |
| .PPY | Uncommon Files |
| .PPZ | 3D Image Files |
| .PQ | Uncommon Files |
| .PQ0 | Uncommon Files |
| .PQ1 | Uncommon Files |
| .PQ2 | Uncommon Files |
| .PQ3 | Uncommon Files |
| .PQ4 | Uncommon Files |
| .PQ5 | Uncommon Files |
| .PQ6 | Uncommon Files |
| .PQ7 | Uncommon Files |
| .PQ8 | Uncommon Files |
| .PQ9 | Uncommon Files |
| .PQA | Uncommon Files |
| .PQB | Uncommon Files |
| .PQC | Uncommon Files |
| .PQD | Uncommon Files |
| .PQE | Uncommon Files |
| .PQF | Uncommon Files |
| .PQG | Uncommon Files |
| .PQH | Uncommon Files |
| .PQI | Disk Image Files |
| .PQJ | Uncommon Files |
| .PQK | Uncommon Files |
| .PQL | Uncommon Files |
| .PQM | Uncommon Files |
| .PQN | Uncommon Files |
| .PQO | Uncommon Files |
| .PQP | Uncommon Files |
| .PQQ | Uncommon Files |
| .PQR | Uncommon Files |
| .PQS | Uncommon Files |
| .PQT | Uncommon Files |
| .PQU | Uncommon Files |
| .PQV | Uncommon Files |
| .PQW | Uncommon Files |
| .PQX | Uncommon Files |
| .PQY | Uncommon Files |
| .PQZ | Uncommon Files |
| .PR | Uncommon Files |
| .PR0 | Uncommon Files |
| .PR1 | Uncommon Files |
| .PR2 | Uncommon Files |
| .PR3 | Uncommon Files |
| .PR4 | Uncommon Files |
| .PR5 | Uncommon Files |
| .PR6 | Uncommon Files |
| .PR7 | Uncommon Files |
| .PR8 | Uncommon Files |
| .PR9 | Uncommon Files |
| .PRA | Uncommon Files |
| .PRAY | Uncommon Files |
| .PRB | Data Files |
| .PRC | Data Files |
| .PRD | Uncommon Files |
| .PRE | Data Files |
| .PRECSTLE | Uncommon Files |
| Extension | File Description |
| .PREF | Settings Files |
| .PREFERENCE | Uncommon Files |
| .PREFERRED | Uncommon Files |
| .PREFIX | Uncommon Files |
| .PREFPANE | System Files |
| .PREFS | Game Files |
| .PREL | Video Files |
| .PREP | Uncommon Files |
| .PREQ | Uncommon Files |
| .PREQUAL | Uncommon Files |
| .PRESENT | Uncommon Files |
| .PRESENTS | Uncommon Files |
| .PRESREL | Uncommon Files |
| .PRESS | Uncommon Files |
| .PREVIZ | Uncommon Files |
| .PREXPORT | Uncommon Files |
| .PRF | Settings Files |
| .PRF2 | Uncommon Files |
| .PRG | Audio Files |
| .PRG2 | Uncommon Files |
| .PRH | Uncommon Files |
| .PRI | Developer Files |
| .PRIMER | Uncommon Files |
| .PRINCIPAL | Uncommon Files |
| Uncommon Files | |
| .PRINT2 | Uncommon Files |
| .PRINTBUF16 | Uncommon Files |
| .PRINTBUF32 | Uncommon Files |
| .PRINTBUF48 | Uncommon Files |
| .PRINTBUF62 | Uncommon Files |
| .PRINTBUF8 | Uncommon Files |
| .PRINTER | Uncommon Files |
| .PRISM | Uncommon Files |
| .PRIVY | Uncommon Files |
| .PRJ | Data Files |
| .PRJPCB | Uncommon Files |
| .PRJX | Uncommon Files |
| .PRJZIP | Uncommon Files |
| .PRK | Game Files |
| .PRKLOG | Uncommon Files |
| .PRL | Uncommon Files |
| .PRM | Plugin Files |
| .PRN | Page Layout Files |
| .PRNX | Uncommon Files |
| .PRO | Video Files |
| .PRO4 | Data Files |
| .PROCESSOR | Uncommon Files |
| .PRODOS | Uncommon Files |
| .PRODUCT | Uncommon Files |
| .PROFILE | Game Files |
| .PROFILES | Uncommon Files |
| .PROG | Uncommon Files |
| .PROGRAM | Uncommon Files |
| .PROGRAMMER | Uncommon Files |
| .PROJ | Uncommon Files |
| .PROJECT | Developer Files |
| .PROLAMP | Uncommon Files |
| .PROMIZER | Uncommon Files |
| .PROP | Uncommon Files |
| .PROPACKER | Uncommon Files |
| .PROPERTIES | Settings Files |
| .PRORUNNER | Uncommon Files |
| .PROTECT | Uncommon Files |
| .PROTO | Developer Files |
| .PRP | Data Files |
| .PRPRESET | Uncommon Files |
| .PRPROJ | Video Files |
| .PRQ | Uncommon Files |
| .PRR | Uncommon Files |
| .PRS | Data Files |
| .PRSL | Uncommon Files |
| .PRT | CAD Files |
| .PRT2 | Uncommon Files |
| .PRTDOT | Uncommon Files |
| .PRTL | Video Files |
