| Mineral Insulated Metal Sheathed | Academic & Science |
| Meiji Institute for Advanced Study of Mathematical Sciences | Academic & Science |
| M I M Corporation | Business |
| Master of Information Management and Systems | Business |
| Maintenance Information Management System | Business |
| Material Inventory Management System | Business |
| Maritime Information Management System | Business |
| Mobile Information Management System | Business |
| Municipal Infrastructure Management System | Business Management |
| Member Information Management System | Business Management |
| The Mortuary Information Management System | Business Management |
| Manifest Information Management System | Business Management |
| Malfunction In Music Seriously | Community |
| Music Is My Savior | Community |
| Menominee Indian Middle School | Community |
| Maximize Immunity and Minimize Stress | Community |
| Manufacturing Information Management System | Computing |
| Mobile Interactive Management System | Computing |
| Mineral Insulated Metal Sheath | Electronics |
| Multimedia Integrated Modeling System | General |
| Mscenter For Integrated Metabolic Systems | General |
| Motivation Innovation Methodology Satisfaction | General |
| Membrane Introduction Mass Spectrometry | General |
| Mineral Insualted Metal Sheathed | General |
| Moscow International Motor Show | General |
| Mumbai International Motor Show | General |
| Melbourne International Motor Show | General |
| Maldives Immigration Information Management System | Governmental |
| Mortuary Information Management System | Governmental |
| MN International Middle School | International |
| Minnesota International Middle School | International |
| Malabar Institute of Medical Sciences | Medical |
| Monthly Index of Medical Specialties | Medical |
| Medical Inventory Management System | Medical |
| Migraine and Myocardial Ischaemia Study | Medical |
| Monthly Index of Medical Specialities | Medical |
| Maximize Immunity, Minimize Stress | Medical |
| Molecular Infection Medicine Sweden | Medical |
| Major Incident Management System | News & Entertainment |
| Medical Information Management System | Space Science |
| Manhattan Island Marathon Swim | Sports |
| Medium-Intensity Magnetic Separator | Technology |
