| p11 | Parity Archive V2 |
| p12 | Parity Archive V2 |
| pack | Pack200 Archive |
| package | Linux Autopackage Package |
| pact | Compact Pro Archive |
| pae | PowerArchiver Encrypted Archive |
| paf | Portable Application Installer |
| paq | PAQ Compressed Archive |
| paq6 | PAQ6 Data Archive |
| paq7 | PAQ7 Data Archive |
| paq8 | PAQ8 Data Archive |
| paq8f | PAQ8F Data Archive |
| par | SAP Portal Archive |
| par | Parity Archive V2 |
| par2 | Parity Archive V2 |
| pax | PAX Archive |
| pb1 | Backup Mill Backup Set |
| pbf | Sprite Backup Archive |
| pck | Microsoft SMS Package |
| pcomp | Polycomp Compressed Data |
| pcv | MozBackup Profile Backup |
| pdv | Privacy Drive Volume |
| pe3 | PhotoImpact 3 Image Archive |
| pea | PeaZip Archive |
| pet | Puppy Linux Install Package |
| pf | StuffIt Private File |
| pgz | StreamLync Download Archive |
| pima | Adobe Application Manager Package |
| pimx | Adobe Creative Cloud Extension |
| pit | PackIt Compressed Archive |
| pk3 | Quake 3 Engine Data File |
| pkg | Microsoft SMS Distribution Manager Package |
| pkg | Mac OS X Installer Package |
| pkg | Sony Playstation 3 Package |
| pkv | Steam Package Data |