| Abbreviation | Definition |
|---|---|
| MJ | Mythical Journeys |
| MJA | Mark Johnston Associates, Inc. |
| MJA | Mindless Jobs of America |
| MJB | Mindless Jobs of Britain |
| MJC | Micro Jack Club |
| MJFC | Image Financial Corporation |
| MJG | Michael Joel Gerrits Builders, Inc. |
| MJI | Michael James Industries, Inc. |
| MJI | Moskowitz Jacobs, Inc. |
| MJNA | Medical Marijuana, INC. |
| MJV | Marc J. Vaughn Janitorial, Inc. |
| MJW | Majestic Wine, PLC. |
| MKAI | Mark Knuckles Associates Inc |
| MKAI | Moffat Kinoshita Architects Inc |
| MKAI | Moffat Kinoshita Architects, Inc. |
| MKAI | Moffat Kinoshita Architects, Incorporated |
| MKC | Mykalai Kontilai Companies |
| MKCL | Maharashtra Knowledge Corporation Limited |
| MKCL | Maharashtra Knowledge Corporation Ltd |
| MKD | Marketing Knowledge Department |