| Abbreviation | Definition |
|---|---|
| MEA | Energy Association |
| MEA | Manatee Education Association |
| MEA | Mathematics Education Association |
| MEA | Midwest Economics Association |
| MEA | Minnesota Economic Association |
| MEA | Minnesota Education Association |
| MEAI | Mining Engineers Association of India |
| MEAI | Mining Engineers' Association of India |
| MEANT | Malayalee Engineers Association of North Texas |
| MEAO | Myalgic Encephalomyelitis Association of Ontario |
| MEBA | Marine Engineers' Beneficial Association |
| MEBA | Metro East Baptist Association |
| MEBA | Michigan Elk Breeders Association |
| MEBA | Mountain Empire Beekeepers Association |
| MEBAC | Municipal Employees Benefit Association of Calgary |
| MECA | Massachusetts Electrical Contractors Association |
| MECA | Metropolitan Emergency Communication Association |
| MECA | Michigan Electric Cooperative Association |
| MECA | Minnesota Erosion Control Association |
| MECA | Mississippi Educational Computing Association |