| Company | Location |
|---|---|
| MAAS Neotech | Brussels, Belgium |
| MacDougall BioCommunications Inc. | Natick, Massachusetts, United States |
| MACRO-M, S.A. de C.V. | Lerma, Mexico |
| Mad City Labs Inc. | Madison, Wisconsin, United States |
| Magfusion Inc. | Chandler, Arizona, United States |
| Magma Design Automation Inc. | Santa Clara, California, United States |
| Magnetran Inc. | Voorhees, New Jersey, United States |
| Makel Engineering Inc. | Chico, California, United States |
| Makino | Mason, Ohio, United States |
| Mallett Technology | Canonsburg, Pennsylvania, United States |
