| Moorish Science Temple of America | Academic & Science |
| Michigan Science Teachers Association | Business |
| Moore Stephens Technology Australia | Business |
| Maryland State Teachers Association | Business |
| Michigan Septic Tank Association | Business |
| Missisippi Science Teachers Association | Business |
| Manufacturers Surgical Trade Association | Business |
| Missouri State Teachers Association | Business |
| Mink Security Training & Advice | Business |
| Mississippi Science Teachers Association | Community |
| Maine Science Teachers Association | Community |
| Montana Science Teachers Association | Community |
| Missouri State Teacher Association | Community |
| Marsha Stern Talmudical Academy (Yeshiva University High School for Boys) | Community |
| Must See To Appreciate | Community |
| Mid South Trails Association | Community |
| Mill School and Technology Academy | Computing |
| Math Science Technology Academy | Computing |
| Microsoft Military Spouse Technology Academy | Computing |
| Microsoft Teacher Academies | Computing |
| Multi Stage Type Approval | General |
| Maruti Suzuki Training Academy | General |
| Member of the Society of Technical Analysts | General |
| Montata State TrapShooting Association | General |
| Motorcycle Sport Touring Association | General |
| Multiple Semester Term Appointment | General |
| Military Spouse Technology Academy | Governmental |
| Municipal School Transportation Assistance | Governmental |
| Mutation Selection Threshold Algorithm | Medical |
| McLean Swimming and Tennis Association | Sports |
