| mo1 | Magnavox Odyssey 1 Emulator ROM Image |
| moa | MOA Data File |
| mob | MobTV P2P File |
| moba | MobaXterm Data |
| moc3 | Live2D Cubism 3 Model Data |
| mod | AMPL Model Data |
| mod | ArchiCAD Module File |
| mod | CADdy++ Mechanical Model Data |
| mod | CATIA Model Data |
| mod | EPOC Model Definitions Data |
| mod | Femap Model File |
| mod | GLPK GNU MathProg Model |
| mod | GNU GRUB Module |
| mod | PeachText Database |
| mod | SVAL Modal Data |
| mode | Coda Syntax Mode |
| model | CATIA Model Data |
| model | Ribbons Model Definition |
| modfem | Femap Model File |
| modus | Adobe Mocha for After Effects Modus Data |
| moe | Modelica Encrypted Model |
| moe | Molecular Operating Environment File |
| moef | Motion Effect Template |
| mogrt | Adobe Premiere Motion Graphics Template |
| mohoaction | Moho Action Data |
| mohobrush | Moho Brush Data |
| mohoexport | Moho Export Profile Data |
| mohostyle | Moho Style Data |
| moi | JVC Everio Video Information Data |
| mojito | LimeWire Kademlia Data |
| mol | MDL Molfile Data |
| mol | Music Module List |
| mol2 | Tripos Mol2 Format File |
| molo | Motion Object |
| mologiq | HTC EVO 3D Data |
