| Abbreviation | Definition |
|---|---|
| MA | Minnesota Advocates for Human Rights |
| MAAM | Mothers Across AMerica |
| MAC | Missions Across Canada |
| MAC | Muslim Association of Canada |
| MACC | Massachusetts Association of Conservation Commissions |
| MACED | Michigan Association for Children with Emotional Disorders |
| MACR | Maryland Alliance of Canine Rescues |
| MACS | Micro and Anophthalmic Children's Society |
| MACS | Mobility and Access Committee for Scotland |
| MACSA | Mexican American Community Services Agency |
| MACV | Minnesota Assistance Council for Veterans |
| MAD | Mothers Against Drugs |
| MADCAP | Making a Difference Constructive Activity Programmes |
| MADCAP | Making a Difference Constructive Activity Programmes (Projects) |
| MADD | Moms Against Drunk Driving |
| MADD | Mothers Against Drunk Driving |
| MADHH | Michigan Association for Deaf and Hard of Hearing |
| MADHS | Michigan Association for Deaf, Hearing, and Speech Services |
| MAF | Meal Assistance For Families |
| MAF | MedicAlert Foundation |