| Abbreviation | Definition |
|---|---|
| MKA | Montana Knifemakers Association |
| MKALC | Milton Keynes Association of Local Councils |
| MLA | Medical Library Association |
| MLA | Mid-America Lumbermens Association |
| MLA | Music Library Association |
| MLPAO | Medical Laboratory Professionals' Association of Ontario |
| MLPIA | Maine Licensed Private Investigator's Association, Inc. |
| MLSFA | Metal Lath/Steel Framing Association |
| MMA | The Metals and Materials Association |
| MMAB | Michigan Masonry Advisory Boards |
| MMBR | Managing Member |
| MMDA | Manitoba Motor Dealers Association |
| MMDA | Milwaukee Marine Dealers Association |
| MMMA | Missouri Merchants and Manufacturers Association |
| MMO | Maintenance, Modifications and Operations |
| MMRA | Medical Malpractice Reinsurance Association |
| MMRA | Mergeminiature Motorsports Racing Association |
| MMRA | Miniature Motorsports Racing Association |
| MMRA | Miracle Mile Residential Association |
| MMRC | Microelectronics Marketing Research Council |