| pcd | Microsoft Visual Test File |
| pcdat | VASP Physics Corellation Data |
| pce | Gerber PCE Data |
| pce | TurboGrafx-16/PC Engine Data |
| pcf | Calyx Point Point Data |
| pcf | Cisco VPN Client Profile Configuration |
| pcfl | SoftWindows Binary Data |
| pcfs | Calyx Point Compressed Point Data |
| pcg | Autodesk Revit Point Cloud File |
| pci | Windows PCI Miniport Data |
| pcif | PayCycle Import Data |
| pcl | OptionVue Portfolio Manager Parcel Data |
| pcmi | ABB PCM600 Pre-configured IED Data |
| pcmt | ABB PCM600 Template IED Data |
| pcn | Corel Paint Shop Pro Contour Preset |
| pcrd | Bio-Rad CFX Manager Software Data |
| pcs | CYANA Pseudocontact Shift Restraint File |
| pcsc | Android Exported Contacts Data |
| pd | Paradox Database |
| pd1 | DFSee Partition Data |
| pd2 | DFSee Partition Data |
| pd4 | Windows Live Photo Gallery Information |
| pd5 | Windows Live Photo Gallery Information |
| pdas | PDAStore Data Store |
| pdata | JSim Pretty Data Format |
| pdb | Sybase PowerDesigner Physical Data Model Backup |
| pdb | Brookhaven Protein DataBase |
| pdb | DL_POLY PDB Trajectory Data |
| pdb | CYANA PDB Coordinate File |
| pdcdm | Sybase PowerDesigner Conceptual Data Model |
| pde | AFP Page Definition |
| pde | Pathology Data Exchange File |
| pdg | Print Designer GOLD Data |
| pdic | Personal Dictionary Database |
| pdj | Pioneer CDJ-1000MK3 Index Data |