| Abbreviation | Definition |
|---|---|
| MMSA | Muslim Medical Student Association |
| MMSA | Muslim Medical Students Association |
| MNA | Mission to North America |
| MNEB | Malaysian Network of Engaged Buddhist |
| MNF | Monday Night Fellowship |
| MNN | Mission Network News |
| MNS | Minnesota South District of the Lutheran Church Missouri Synod |
| MOA | Mokichi Okada Association |
| MOA | Muslims Of America |
| MOA | Muslims of the Americas |
| MOB | Magic Of Believing |
| MOB | Making Others Believe |
| MOB | Mark Of the Beast |
| MOB | Methodist Old Boys |
| MOB | Mission Of Believers |
| MOB | Missionaries On Bikes |
| MOB | Muslims on Bikes |
| MOC | Messengers Of Christ |
| MOD | Missions Outreach Day |
| MOFG | Man of GOD |