| Matrix Management Corporation | California |
| Matrix Marketers | |
| Matrix Rental Solutions | |
| Matrix Science, Inc. | Massachusetts |
| Matrix Software | Massachusetts |
| Matrix Solutions | Pennsylvania |
| Matrix Surgical USA | Georgia |
| Matrix Systems Holdings, LLC | Ohio |
| Matrix Test Equipment, Inc. | New Jersey |
| Matrixforce | Oklahoma |
| MatrixSpace | Massachusetts |
| MatrixSpace | |
| MATRIXX Software | California |
| Matrubials, Inc. | |
| Matson & Isom Technology Consulting | California |
| Matsuda & Associates, Inc. | |
| Matt Antonio | Florida |
| Matt Boldt | |
| Matt Cotten & Associates | Illinois |
| Matt Meeks | Colorado |
| Matt Mullenweg | Texas |
| MatTek | Massachusetts |
| MATTER | Illinois |
| Mattermark, Inc. | California |
| Mattermost, Inc. | California |
| Matternet | California |
| Matterport | California |
| Matterworks | Massachusetts |
| Matterworks, Inc. | |
| Matthew Edgar | |
| Matthew Fleming, Inc. | Washington |
| Matthew James Creative, Inc. | |
| Matthew Straczek | Illinois |
| Matthijssen, Inc. | New Jersey |
| MattoBoard | |
| Mattrix Technologies | |
| Matumba | |
| Matumedia, LLC | South Carolina |
| MatWeb, LLC | |
| MatX | California |
| Maui Marketing, LLC | |
| Mauna Kea Semiconductors | |
| Mauricio Frusciante | Florida |
| MAURO Usability Service | New York |
| Mautic | |
| Mauve Capital Partners | Massachusetts |
| Maven Analytics | Massachusetts |
| Maven Learning, Inc. | |
| Maven Research, Inc. | New Hampshire |
| Maven Solutions | |