| Abbreviation | Definition |
|---|---|
| MCST | Management Corporation Strata Title |
| MCTC | McKimmon Conference and Training Center |
| MCTC | Message Community Telephone Company |
| MCTC | Michigan California Timber Company |
| MCTM | Mid-Continent Tool and Molding |
| MCV | Midland (Michigan) Co-generation Venture |
| MCVC | Mobile Convention and Visitors Corporation |
| MCW | Margin Cost of Water |
| MCW | Metro Cammell Weymann |
| MCW | Model Car World |
| MCWA | Monroe County Water Authority |
| MCWP | Madison County Wood Products |
| MCY | Ming Chun Yuan Enterprise Corporation Company, LTD. |
| MCZ | Manufatti Cementi Zanette |
| MCZ | Mario Charest Zinformatic |
| MD | McDonnell Douglas |
| MD | Mejeriselskabet Danmark |
| MDA | McDonnell Douglas Aerospace |
| MDA | Missouri Dental Advocates |
| MDA | Music Direct Australia |