| Abbreviation | Definition |
|---|---|
| MAPSA | Mexican American Pharmacy Student Association |
| MAPSA | Michigan Association of Public School Academies |
| MAPSA | Midwest Automotive Parts Service Association |
| MAPT | Maine Association for Pupil Transportation |
| MAPT | Massachusetts Association of Pupil Transportation |
| MARA | Madison Area Repeater Association |
| MARA | Mercury Amateur Radio Association |
| MARA | Mercury Amatuer Radio Association |
| MARA | Mid America Running Association |
| MARD | Michigan Association of Registers of Deeds |
| MAREMA | Mid Atlantic Real Estate Marketing Association |
| MARF | Missouri Association of Rehabilitation Facilities |
| MARGE | Manitoba Association of Retired Government Employees |
| MARO | Michigan Association of Rehabilitation Organizations |
| MARP | Mississippi Association of Recovering Pharmacists |
| MARPA | Malaysian Radiation Protection Association |
| MARPA | Marion Area Rental Property Association |
| MARPA | Massachusetts Association of Regional Planning Agencies |
| MARS | Midwest Association of Rail Shippers |
| MARSE | Mesquite Association of Retired School Employees |