| Mitsui and Co. Ltd. | New York, New York, United States |
| MMC Metrology Labs Inc. | Virginia Beach, Virginia, United States |
| Modis IT | Meriden , Connecticut, United States |
| Modular Process Technology | San Jose, California, United States |
| Mohawk Innovative Technology Inc. | Albany, New York, United States |
| Molecular Devices and Tools for Nanotechnology | Moscow, Russian Federation |
| Molecular Devices Corp. | Sunnyvale, California, United States |
| Molecular Electronics Inc. | Hilton Head Island, South Carolina, United States |
| Molecular Imaging Corp. | Tempe, Arizona, United States |
| Molecular Imprints Inc. | Austin, Texas, United States |