| Abbreviation | Definition |
|---|---|
| MMTC | Marin Musical Theatre Company |
| MMTC | Mid- Missouri Telephone Company |
| MMTC | Minerals & Metals Trading Corporation of India |
| MMTC | Murray Mallee Training Company |
| MMTI | Mansour Mining Technologies Incorporated |
| MMTI | Martin Marietta Technologies, Inc. |
| MMTI | Mega Micro Technology International |
| MMTS | Merchant Marine Training Services |
| MMU | Multi-Media University |
| MMV | MultiMedia Visionaries, Inc. |
| MMW | A. A. MacArthur, Means, & Wells Architects, P. C. |
| MMW | Medeski Martin And Woods |
| MMW | Medeski, Martin, and Wood |
| MMW | Murphy Mccomb Witten |
| MMWAC | Mid-Maine Waste Action Corporation (Auburn, ME; waste disposal) |
| MMWL | Media Matrix Worldwide Ltd |
| MMZ | Minskiy Mechanicheskiy Zavod |
| MNA | Michael Neumann Architecture, L.L.C. |
| MNA | Michelin North America, Inc. |
| MNA+P | McNaughton Architect + Partners |