| Mid-State Communications & Electronics, Inc. | New York |
| Mid-State Distributing Co. | Iowa |
| Mid-State Technical College | Wisconsin |
| Mid-West Family La Crosse | |
| MidAmerica Nazarene University | Kansas |
| Midas Capital, LLC | Missouri |
| MidAtlanticBroadband | Maryland |
| Midaxo | Massachusetts |
| Midcap Financial Investment Corporation | |
| Midco | North Dakota |
| Midcom | California |
| Midcom Data Technologies, Inc. | Michigan |
| Midcon Cables Company | Missouri |
| Middesk, Inc. | California |
| Middle | |
| Middle Georgia State University | Georgia |
| Middle Tennessee State University Computer Science Department | Tennessee |
| Middle Tennessee State University Department of Mathematical Sciences | Tennessee |
| Middlebury College Mathematics and Statistics | Vermont |
| Middleground Technologies, LLC | Illinois |
| Middleland Capital | District of Columbia |
| Middleware Lab, Inc. | California |
| Mide Technology Corporation | Massachusetts |
| Miden | |
| Mideo Systems, Inc. | California |
| Midfield Technologies | Rhode Island |
| MIDI Manufacturers Association, Inc. | California |
| Midi, Inc. | |
| Midian Electronics, Inc. | Arizona |
| Midjourney, Inc. | |
| Midland College | Texas |
| Midland Information Systems | Florida |
| Midland Tech International Corporation | California |
| Midland University | Nebraska |
| Midlands Technical College | South Carolina |
| Midlantech, Inc. | Virginia |
| MidMark Capital | New Jersey |
| Midnight Blue Technology Services, L.P. | Pennsylvania |
| Midnight Commercial | |
| MidOcean Partners | |
| MidPhase Services | Utah |
| MidSouth Wire & Cable Co. | North Carolina |
| Midstate Electronics | Connecticut |
| MIDTEL | New York |
| Midtown Micro, Inc. | California |
| Midway University | Kentucky |
| MidwayNet.net | Indiana |
| Midwest Automation and Custom Fabrication | Arkansas |
| Midwest Billboards, Inc. | |
| Midwest Captions, Inc. | Minnesota |