| owr | PeopleSoft Enterprise Results Archive |
| oxt | OpenOffice.org Extension |
| ozip | Oppo Smartphone Firmware Update |
| ozip | oZip Compressed Data |
| p01 | Parity Archive V2 |
| p02 | Parity Archive V2 |
| p03 | Parity Archive V2 |
| p04 | Parity Archive V2 |
| p05 | Parity Archive V2 |
| p06 | Parity Archive V2 |
| p07 | Parity Archive V2 |
| p08 | Parity Archive V2 |
| p09 | Parity Archive V2 |
| p10 | Parity Archive V2 |
| p11 | Parity Archive V2 |
| p12 | Parity Archive V2 |
| p3d | Panda3D Archive |
| pa | PowerArchiver Compressed Archive |
| pack | Pack200 Archive |
| package | Linux Autopackage Package |
| pact | Compact Pro Archive |
| pae | PowerArchiver Encrypted Archive |
| paf | Portable Application Installer |
| pafx | YouMinds Composer Portable Archive |
| pafz | YouMinds Composer Portable Archive |
| paq | PAQ Compressed Archive |
| paq6 | PAQ6 Data Archive |
| paq7 | PAQ7 Data Archive |
| paq8 | PAQ8 Data Archive |
| paq8f | PAQ8F Data Archive |
| paq8jc | PAQ8JC Compressed Archive |
| paq8jd | PAQ8JD Compressed Archive |
| paq8l | PAQ8L Compressed Archive |
| paq8o | PAQ8O Compressed Archive |
| paq8o8 | PAQ8O8 Compressed Archive |
