| Abbreviation | Definition |
|---|---|
| MICB | Member of Institute of Certified Bookkeepers |
| MIDiagE | Member of the Institution of Diagnostic Engineers |
| MIEC | Maintenance and Inspection Engineering Contractor |
| MIES | Member of Illuminating Engineering Society |
| MIIRSM | Member of the International Institute of Risk and Safety Management |
| MIMA | Metal Injection Molding Association |
| MIMI | Member of the Institute of Motor Industry |
| MIMPA | Malaysian Integrated Medical Professionals Association |
| MIPA | Manitoba International Pharmacists' Association |
| MIPA | Member of the Institute of Professional Administrators |
| MIRA | Motor Industry Research Association |
| MISA | Maryland Investigators and Security Association |
| MISB | Motion Imagery Standards Board |
| MISMO | Mortgage Industry Standards Maintenance Organization |
| MISRA | Motor Industry Software Reliability Association |
| MIT | Malta Institute of Taxation |
| MITS | Monash Information Technology Society |
| MJA | Medical Journalists' Association |
| MJA | Michigan Judges Association |
| MKA | Malaysian Kennel Association |