| pbn | Portable Bridge Notation Database |
| pbo | Samsung A900 Phone Book Object |
| pbp | COM Profibus ASCII Exported Data |
| pbp | Sony PSP Firmware Update Image |
| pbq | PunkBuster Query Script |
| pbr | Corel Paint Shop Pro Brush Data |
| pbr | Microsoft Publisher Backup Data |
| pbs | Paint Shop Pro Brush Strokes Data |
| pbz | Picasa Button Zipfile |
| pc | Sierra Print Artist Postcard |
| pc5 | RSLogix 5 Internal Data |
| pca | MicroSim PCBoard Layout Data |
| pca | PCAnywhere Registry Backup |
| pcache | Unity Point and Particle Cache |
| pcap | Libpcap Captured Packets |
| pcapng | PCAP Next Generation Dump Data |
| pcast | iTunes Podcast File |
| pcb | CIRCAD PCB Design |
| pcb | SmartCAM Custom Control Panel File |
| pcb3dlib | Altium Designer PCB 3D Model |
| pcbdoc | Altium PCB Document |
| pcblib | Protel PCB 3.0 Binary Library |
| pcc | PCCharge Log File |
| pcd | ChemSep Pure Compound Data |
| pcd | Microsoft Visual Test File |
| pcdat | VASP Physics Corellation Data |
| pce | Eudora Mailbox Name Map |
| pce | Gerber PCE Data |
| pce | TurboGrafx-16/PC Engine Data |
| pcf | Calyx Point Point Data |
