| Abbreviation | Definition |
|---|---|
| MOA | Minnesota Optometric Association |
| MOA | Moke Owners Association |
| MOAA | Minority Opportunities Athletic Association |
| MOAAL | Military Officers Association of America Ladies |
| MOAT | Media Owners Association of Tanzania |
| MOBA | Mfantsipim Old Boys Association |
| MODA | Mid Ohio Dressage Association |
| MOFA | Mid Ohio Filmmakers Association |
| MOGA | Memphis Obstetrics and Gynecological Association |
| MOGA | Memphis Obstetrics Gynecological Association |
| MOGA | Michigan Oil And Gas Association |
| MOGA | Montana Outfitters and Guides Association |
| MOMA | Message Oriented Middleware Association |
| MOMA | Mississippi Osteopathic Medical Association |
| MOPIA | Manitoba Ozone Protection Industry Association |
| MOSA | MCIT Online Student Association |
| MOSA | Michigan Optometric Student Association |
| MOSTA | Malaysian Oil Scientists and Technologists' Association |
| MOTSA | Master of Occupational Therapy Student Association |
| MOWA | Malaysian Optical Wholesalers Association |