| Abbreviation | Definition |
|---|---|
| MOCA | Maine Old Cemetery Association |
| MOCA | Men Of Christian Action |
| MOCA | Minnesota Ovarian Cancer Alliance |
| MOD | March Of Dimes |
| MOD | Mothers Of the Disappeared |
| MODBDF | March Of Dimes Birth Defects Foundation |
| MOM | Member Of the Month |
| MOMA | Mom's On A Mission For Autism |
| MOMM | Mothers Opposing Mandatory Medicine |
| MOMS | Managing Our Multiple Sclerosis |
| MOMU | Malaysians of Melbourne University |
| MORI | Market Opinion Research International |
| MORI | Market & Opinion Research International |
| MORS | Military Operations Research Society |
| MOSAIC | Making Our Services All Integrated in Camden |
| MOSES | Mothers Organizing to Stop Environmental Sins |
| MOST | Mothers Of Super-Twins |
| MOTB | Music On The Bay |
| MOTD | Member Of The Day |
| MOTY | Member Of The Year |