| Abbreviation | Definition |
|---|---|
| MAT | Makgofe Arts Theater |
| MAUW | Michigan Association of United Ways |
| MAW | Make A Wish Foundation |
| MAWF | Make A Wish Foundation |
| MAWFA | Make A Wish Foundation of America |
| MBAE | Massachusetts Business Alliance for Education |
| MBAF | Manhattan Beach Athletic Foundation |
| MBAF | Massachusetts Birds Assistance Fund |
| MBBA | Mendip Bridleways Byways Association |
| MBBA | Mendip Bridleways & Byways Association |
| MBE | Members' Brilliant Effort |
| MBGF | Melinda Bill Gates Foundation |
| MBGF | Melinda & Bill Gates Foundation |
| MBHF | Mend a Broken Heart Foundation |
| MBI | Moody Bible Institute |
| MBP | My Brothers Pantry |
| MBPA | Minnesota Building Performance Association |
| MBPA | Monterey Bay Psychological Association |
| MBR | Member |
| MBS | Miniature Book Society |