| Abbreviation | Definition |
|---|---|
| MD | Managing Director |
| MD | Manly Dude |
| MD | Marketing Director |
| MD | Master of Disguise |
| MD | Medical Detective |
| MD | Medical Doctor |
| MD | Metaphysical Doctor |
| MDO | Marketing Development Officer |
| MDS | Modern Day Samurai |
| ME | Managing Editor |
| ME | Master Electrician |
| ME | Mechanical Engineer |
| ME | Medical Examiner |
| MEA | Medical Examiner of Arkansas |
| MEA | Merchandising Execution Associate |
| MEM | Merchandising Execution Manager |
| MEMBERSERVICECOORDINATOR | The one who's taking care of members of the Vacation Clubs |
| MEP | Multi-Engine Pilot |
| MER | Mechanical Engineer Of Record |
| MERM | Merchandising Execution Regional Manager |