| mpi | Moldflow Plastics Insight Document |
| mpi | MPlayer Control Data |
| mpip | mpiP Data |
| mpk | GE LEDR Radio Software Image |
| mpk | Project64 Memory Pack |
| mpl | AVCHD Playlist Data |
| mpl | Maple Language File |
| mplog | Wireshark Micropross Mplog |
| mpls | Blu-ray Disc Movie Playlist |
| mpm | Blueice Multipass Data |
| mpm | Corel WordPerfect MathPlan Macro |
| mpp | MobileFrame Project Publisher Data |
| mpp2 | MPEG2 Video Header Information Data |
| mpr | Autodesk AutoCAD Mass Properties Report |
| mpr | Multilizer Dictionary Data |
| mpr | Music Publisher Backup File |
| mpr | woodWOP Data |
| mprv | Imperva SecureSphere Data |
| mpu | Mail.dat Mail Piece Unit File |
| mpud | MPViewer Data |
| mpv | Microsoft Project View Data |
| mpvd | MPViewer Data |
| mpvm | MPViewer Data |
| mpvuhpcp | CPXe Upload Control Data |
| mpw | Mapwel GPS Map |
| mpw | Microsoft Project Workspace Data |
| mpz | MADRIX 3 Compressed Patch |
| mq | Microsoft Windows Message Queuing Data |
| mqb | Metasequoia Brush File |
| mqd | Malete Query Data File |
