| MedTrials | |
| Medtron Software | Louisiana |
| Medtronic | |
| Medtrum Technologies, Inc. | |
| Medunik | |
| MedUSA | Utah |
| Medusind | California |
| MEDVACON Life Sciences, LLC | New Jersey |
| MedVadis Research | |
| MedVadis Research | |
| Medversant | California |
| MEDvidi, Inc. | |
| Medweb | California |
| MedXL, Inc. | |
| Medyear | |
| Medyx.ai, Inc. | Delaware |
| Medzino | Texas |
| MeeBoss | |
| Meedan | |
| Meeno | |
| Meet a Pro | California |
| Meet Me In The Cloud, Inc. | California |
| MeetEdgar | Minnesota |
| MeetingBridge | Connecticut |
| MeetingOne | Colorado |
| MeetingSift | California |
| MeetKai, Inc. | |
| MeetMax | New York |
| Meetup | New York |
| Mega Circuit, Inc. | Illinois |
| Mega Electronics, Inc. | New Jersey |
| Mega Industries, LLC | Maine |
| MEGA Molecular Evolutionary Genetics Analysis | Arizona |
| Mega Toners, Inc. | New York |
| Mega-Byte Computer-Services, LLC | Ohio |
| MEGAchip Technologies | Indiana |
| MegaChips | California |
| Megadalton Solutions | |
| Megahertz Computer, Inc. | Massachusetts |
| Megahertz Technology, Inc. | Texas |
| Megakaryon Corporation | |
| Megalab Group, Inc. | |
| Megalodon | Wyoming |
| Megalytic | New York |
| MegaMacs | Oklahoma |
| Megan Erin Miller | California |
| MegaNano BioTech, Inc. | |
| Meganet Communications | Massachusetts |
| MegaPhase, LLC | Pennsylvania |
| Megapixel VR | California |