| Missouri State University Department of Mathematics | Missouri |
| Missouri Technology Corporation | Missouri |
| Missouri University of Science and Technology Computer Science | Missouri |
| Missouri University of Science and Technology Mathematics and Statistics | Missouri |
| Missouri Valley College | Missouri |
| Missouri Western State University | Missouri |
| Mist Systems | California |
| Mist.io, Inc. | |
| MisterNic, LLC | California |
| Misty Robotics | Colorado |
| MiSynth | New York |
| MiT Communications | |
| MIT FinTech | Massachusetts |
| MIT Introduction do Deep Learning | Massachusetts |
| MIT Technology Review | Massachusetts |
| MIT-IBM Watson AI Lab | Massachusetts |
| MiTAC Computing Technology Corporation | |
| Mitchel Computer Services, Inc. | Alabama |
| Mitchell | |
| Mitchell Aerospace, Inc. | |
| Mitchell College | Connecticut |
| Mitchell Designs, LLC | |
| Mitchell Electronics Corporation | New York |
| Mitchell Electronics, Inc. | Ohio |
| Mitchell Humphrey & Co. | Missouri |
| Mitchell Marketing Management | Illinois |
| Mitchell Martin | New York |
| Mitchell Technical College | South Dakota |
| Mitchell-Wayne Technologies | Alabama |
| MiTec Solutions, LLC | California |
| MITechNews.com | Michigan |
| MiTeGen, LLC | |
| Mitek Computers, LLC | Kentucky |
| Mitek Systems, Inc. | California |
| Mitek, Inc. | |
| MITEM Corporation | California |
| Mitera Biosciences, Inc. | |
| Mithradote Bio, Inc. | |
| Mithrl | |
| Mitinet Library Service | Wisconsin |
| Mitnick Security Consulting, LLC | Nevada |
| Mitobridge | Massachusetts |
| MitoChem Therapeutics, Inc. | |
| Mitochon Pharmaceuticals | |
| MitoImmune Therapeutics, Inc. | |
| MitoSense, Inc. | Massachusetts |
| Mitotherapeutix | |
| Mitov Software, LLC | California |
| Mitratech | Texas |
| MITRE | Massachusetts |