| M&M Solutions, Inc. | California |
| M&M Technical Services, Inc. | Virginia |
| M&S Biotics, LLC | Texas |
| M&S Consulting | West Virginia |
| M&S Technologies | Illinois |
| M-Files, Inc. | Texas |
| M-S Cash Drawer | California |
| M-Scribe Technologies, LLC | Massachusetts |
| M-Tech Digital | New York |
| M-Tech Software, Inc. | California |
| M-Tron Components, Inc. | New York |
| M. R. Danielson Advertising | |
| M.AI Unbound, Inc. | |
| m.e.designlab | North Carolina |
| M.I.B. Chock, LLC | California |
| M.J. Web Design | |
| M.S. Group Software, LLC | South Carolina |
| M1 Holdings, Inc. | Illinois |
| M1-project | Delaware |
| M10Digital | Florida |
| M12 | Washington |
| M13 | California |
| M16 Marketing | |
| M1K3, LLC | |
| M1neral, LLC | |
| M2 Antenna Systems, Inc. | California |
| M2 Global Technology Ltd | Texas |
| M2 Insights | |
| M2 Marketing, LLC | |
| M2 Technologies, Inc. | South Carolina |
| M25 | Illinois |
| M29 Technology and Design | California |
| M2A Solutions, Inc. | |
| M2COMSYS, Inc. | Nevada |
| M2D Global Life Sciences | Massachusetts |
| M2SYS Technology | Georgia |
| M3 Agency | |
| M3 Consulting, Inc. | Georgia |
| M3 Wake Research | North Carolina |
| M3Server, Inc. | Alabama |
| M4 Worldwide, Inc. | Florida |
| M5 Internet Hosting, Inc. | California |
| M5 Venture | New York |
| M6.net | Texas |
| M6iT Consulting | |
| M6P Therapeutics | |
| m80.Net | Michigan |
| M8Solutions.com | Minnesota |
| Ma Laboratories, Inc. | California |
| MA Team | Illinois |