| ptn2 | PaperPort Thumbnail Cache |
| ptp | Primo Emulator Tape Image |
| ptped | iPed Database Backup |
| ptrack | SAM Predict Track Data |
| pts | Abbyy FineReader Data |
| pts | ENVI Ground Control Point File |
| ptt | Microsoft MapPoint Template |
| ptts | CASIA-OLHWDB 2.0 Page Data |
| ptu | PicoQuant Time Tagged File |
| ptxml | Windows PerfTrack XML Data |
| ptxt | Avid Pro Tools Session Template |
| pty | IBM Rational Rose Property Set |
| pubkr | PGP Public Keyring Data |
| puc | Page Update Checker Data |
| puf | Puffer Encrypted Data |
| pug | PUG Archive |
| puk | Pavuk Universal Command Data |
| pul | PATCHMASTER Pulsed Tree Data |
| pun | Aplitop MDT Points Data |
| pur | PureRef Data |
| purgeable | Time Machine Corrupted Backup Data |
| puz | Crossword Puzzle Solver Data |
| pv | CONSEL P-Value Data |
| pvb | VirtualBoss PocketPC Data FIle |
| pvbve | Pixela VideoBrowser Post Edit Data |
| pvdb | PV Elite Database |
| pvf | PageVault/PageRecall File |
| pvfulltext | PaperVision FullText Data |
| pvg | Microsoft Encarta World Atlas Pushpins |
| pvi | PV Elite Input File |
| pvj | K-Flow ProofVision Job Ticket |
| pvk | Microsoft Software Publisher Private Key |
| pvm | Parallels Desktop Machine Bundle |
| pvmz | Parallels Desktop Compressed Virtual Machine |
| pvo | P-View Input Data |