| Abbreviation | Definition |
|---|---|
| MASOM | Midwest Association of Shia Organized Muslims |
| MATI | Maldivians Against True Islam |
| MAVE | Muslims Against Violence Everywhere |
| MAYA | Muslim Arab Youth Association |
| MB | Marriage Bond |
| MBA | Miracles Being Achieved |
| MBB | Muslim Background Believer |
| MBBC | Metropolitan Bible Baptist Church |
| MBBC | Mission Blvd Baptist Church |
| MBBC | Mountain Brook Baptist Church |
| MBBF | Mill Bay Baptist Fellowship |
| MBBF | Missouri Baptist Biker Fellowship |
| MBBF | Missouri Baptist Bikers Fellowship |
| MBBF | Missouri Baptist Bikers' Fellowship |
| MBBS | Muslim Bomb Blowjob Shack |
| MBC | Mandurah Baptist College |
| MBC | Manipur Baptist Convention |
| MBC | Missionary Baptist Church |
| MBC | Most Backward Community |
| MBCA | Mount Bethel Christian Academy |