| Abbreviation | Definition |
|---|---|
| MMHA | Maryland Multifamily Housing Association |
| MMHAA | Mangalarga Marchador Horse Association of America (humane breed association) |
| MMLA | Midwest Modern Language Association |
| MMLA | Minority Male Leadership Association |
| MMMA | Missouri Merchants Manufacturers Association |
| MMPA | Michigan Milk Producers Association |
| MMPA | Multicultural Motion Picture Association |
| MMRA | Midwest Medical Records Association |
| MMRA | Minnesota Motorcycle Riders Association |
| MMSA | Malta Medical Students' Association |
| MMSA | Materials and Methods Standards Association |
| MMSA | Mercantile Marine Service Association |
| MMSA | Metro Midrange Systems Association |
| MMSA | Midwest Military Simulation Association |
| MMSA | Midwest Mini Sprint Association |
| MMSA | Midwest Mini Srint Association |
| MMSA | Minnesota Middle School Association |
| MMSA | Minnesota Mine Safety Association |
| MMSA | Mississippi Main Street Association |
| MMSA | Muslim Medical Student Association |