| ipalias | Apple iPhoto Alias File |
| ipb | IRAM Plateau de Bure Interferometer Data |
| ipc | IPC-D-356 Data |
| ipc | WinPLOTR Intrinsic Profile Component Data |
| ipdb | IP Address Tracker Database |
| ipds | Intelligent Printer Data Stream |
| ipe | Microth InPad Stroke Set |
| ipf | F-Secure Incremental Policy File |
| ipf | IGOR Pro Procedure File |
| ipf | Microsoft SMS Installer Script |
| ipf | OS/2 Warp Help Data |
| ipf | PCAN-Explorer Panel Data |
| ipfg | iPFG Client Data |
| ipfix | Internet Protocol Flow Information Export Protocol Data |
| ipflib | DWOS Implant Library Data |
| iphoto | Apple iPhoto Photo Library |
| ipi | Microsoft Windows Installer Data |
| ipk | Nintendo DS Packed Image Data |
| ipk | Shana Informed Filler Package |
| ipkg | Indicore SDK Package |
| ipl | CorelDraw Pantone Spot Reference Palette |
| ipl | PLATO Learning System Temporary Data |
| ipl22 | PLATO Learning System Temporary Data |
| iplb | Apple iPhoto Library File |
| ipm | Image-Pro Plus Macro |
| ipmeta | Apple iPhoto Metadata |
| ipp | OmniPage Image Enhancement Template |
| ipr | TINA Interpreter File |
| iprep | KIVA-3 Input Data |
| ips | Impact CAD Data |
| ips | IPS Framework Configuration |
| ips | Mensi 3Dipsos Data |
| ips | VisualBoy Advance IPS Patch File |
| ipsa | IPSA Scene Data |
| ipspot | Apple iPhoto Spot File |
