| Malta Medical Students Association | Academic & Science |
| Michigan Math and Science Academy | Academic & Science |
| Mining and Metallurgical Society of America | Academic & Science |
| Milwaukee Math and Science Academy | Academic & Science |
| Medical Mycological Society of the Americas | Academic & Science |
| Marshall Math Science Academy | Academic & Science |
| Methodology Measurement and Statistical Analysis | Academic & Science |
| Master of Midwifery of the Society of Apothecaries | Academic & Science |
| Maine Mathematics Science Alliance | Academic & Science |
| Metropolitan Micropolitan Statistical Areas | Academic & Science |
| Money Management Share Accounts | Business |
| Mackenzie Municipal Services Agency | Business |
| Money Management Share Account | Business |
| Media Marketing Sponsorships Artist | Business |
| Metro Midrange Systems Association | Community |
| Minnesota Mine Safety Association | Community |
| Midwest Mini Srint Association | Community |
| Minnesota Middle School Association | Community |
| Mississippi Main Street Association | Community |
| Materials and Methods Standards Association | Community |
| Mercantile Marine Service Association | Community |
| Mansfield Middle School Association | Community |
| Mail me some art | General |
| Mitsubishi Motor Sales of America | General |
| Mitsubishi Motors South Africa | General |
| Midwest Mini Sprint Association | General |
| Mahindra and Mahindra South Africa | General |
| Methanol Market Services Asia | General |
| Money Market Savings Account | General |
| Maternity of Mary Saint Andrew | General |
| Midwest Military Simulation Association | Governmental |
| Muslim Medical Student Association | Medical |
| Muslim Medical Students Association | Medical |
| Muhammadiyah Medical Students Activities | Medical |
| Must Medical Sensual Association | Medical |
| Mad Madison Sports Authority | Sports |
