| minc | PokeMini Color Data |
| mindnode | MindNode Document |
| mini | Mini V Presets Data |
| minibank | Mini V Presets Data |
| minidsf | eXtendable Wad Editor MINIDSF Data |
| miniml | MINiML File |
| miniseed | Scream MiniSEED Data |
| minissf | eXtendable Wad Editor MINISSF Data |
| mio | MyInfo Topic Data |
| miobject | Mine-imator Object Data |
| miparticles | Mine-imator Particles Data |
| mir | Mail.dat Manifest Individual File |
| mis | 3WayPack Missing Data Pointers Data |
| mit | MineEdit Inventory Template |
| miv | MapImagery Vendor Profile |
| mix | Autodesk 3D Studio Max Motion Mixer Data |
| mix | Project Dogwaffle Mixing Palette |
| mix | VentaFax Voice Message Batch |
| mixn | Apple Guide Addition Data |
| mi_ | Compressed MID File |
| mj | MovieJack DVD Ripper File |
| mj | Palladio ModelJoin Query File |
| mj4 | Objectif Lune Sugopita Data |
| mjd | Mime-encoded JDF |
| mjf | Magnet Field Job Data |
| mjk | Adobe Illustrator Mojikumi Set |
| mjm | JMF Mime Package |
| mjs | Mijas 7400 Costing Database |
| mjx | Objectif Lune Sugopita Data |
| mk2 | Flowcom 32 Data |
