| Abbreviation | Definition |
|---|---|
| MANA | The Midwest Angel Network Association |
| MAND | Maine Association of Naturopathic Doctors |
| MANRRS | Minorities in Agriculture, Natural Resources, and Related Sciences |
| MANT | Manufacturers Association of North Texas |
| MAPS | Multidisciplinary Association For Psychedelic Studies |
| MAR | Massachusetts Association of Realtors |
| MARD | Maharashtra Association of Resident Doctors |
| MARD | Manitoba Association of Registered Dietitians |
| MAREC | Michigan Alternative and Renewable Energy Center |
| MARIA | The Manitoba Audio Recording Industry Association |
| MASA | Minnesota Association Of School Administrators |
| MASA | Missouri Association Of School Administrators |
| MAST | Maryland Association of Science Teachers |
| MAT | Multi-academy trusts |
| MATES | Marine Association for Technology Exchange Standards |
| MAUR | Management Authority for Urban Railways |
| MAYA | A Muslim American Youth Association |
| MBA-HM | Masters of Business Administration in Hospitality Management |
| MBAT | Magazine Business Association of Taipei |
| MBBA | Michigan Business Brokers Association |