| mph | PhotoLine Morphing Data |
| mphbin | COMSOL Multiphysics Binary Data |
| mpi | Moldflow Plastics Insight Document |
| 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 |
| mpp | MobileFrame Project Publisher Data |
| mprv | Imperva SecureSphere Data |
| mpu | Mail.dat Mail Piece Unit File |
| mpud | MPViewer Data |
| mpvd | MPViewer Data |
| mpvm | MPViewer Data |
| mpvuhpcp | CPXe Upload Control Data |
| mpw | Mapwel GPS Map |
| mpz | MADRIX 3 Compressed Patch |
| mq | Microsoft Windows Message Queuing Data |
| mqb | Metasequoia Brush File |
| mqd | Malete Query Data File |
| mqm | Metasequoia Material File |
| mqo | Metasequoia Object File |
| mqp | Metasequoia Palette File |
| mqtbx | XTRF Terminology Database |
| mqu | GraphicUSB Capture Data |
| mqx | Malete Query Access File |
| mqxliff | memoQ XLIFF Data |
| mr | Mapped Read Format Data |
| mrd | Malete Record Data File |
| mrdb | Zuken E3.series Manufacturing Rule Library |
| mre | Steinberg MR Editor File |
| mrec | MADRIX Record File |
