| Abbreviation | Definition |
|---|---|
| METBA | Montavilla East Tabor Business Association |
| METNA | Merced Extension Triangle Neighborhood Association |
| METSA | Miniature Equine Therapy Standards Association |
| MEVA | Manitoba Electric Vehicle Association |
| MFA | Managed Funds Association |
| MFA | Medical Fitness Association |
| MFAA | Massachusetts Facilities Administrators Association |
| MFAA | Massachusetts Field Archery Association |
| MFAI | Metal Finishers Association of India |
| MFASA | Mizoram Finance Accounts Service Association |
| MFBA | Mitcham Filipino British Association |
| MFBA | Montreal F Body Association |
| MFBA | Mummers Fancy Brigade Association |
| MFCA | Management Faculty of Color Association |
| MFCA | Maryland Fire Chiefs Association |
| MFCA | McNair Farms Community Association |
| MFCA | Miniature Football Coaches Association |
| MFCA | Minnesota Football Coaches Association |
| MFCA | Missouri Football Coaches Association |
| MFDA | Malaysian Flying Disc Association |