| Abbreviation | Definition |
|---|---|
| MMJ | Mobile Media Japan |
| MMJ | Music Mountain Jamboree |
| MMJ | Mystic Music Jam, Inc. |
| MMK | Magnitogorski Metalurgicheski Kombinat |
| MMM | Marjorie's And Maureen's Meanderings |
| MMM | Marshall Macklin Monaghan |
| MMM | Mike's Mini Mail |
| MMM | Murphy Mcginnis Media |
| MMMA | Mitsubishi Motor Manufacturing of America, Inc. |
| MMMB | Malaysian Merchant Marine Berhad |
| MMMM | Mitch Murch's Maintenance Management Company |
| MMMS | Michigan Medical Management Services |
| MMMS | Mt. McKinley Meat and Sausage Company |
| MMMS | MultiMedia Makeup Specialists |
| MMP | Marlette Machine Products, Inc. |
| MMPC | Mitsubishi Motors Philippines Corporation |
| MMPI | Merchandise Mart Properties Inc |
| MMQ | McGrail, Merkel, Quinn & Associates |
| MMR | Mantaray Motorsport Racing |
| MMR | Mass Market Retailers |