| MDCare EMR/PMS | Illinois |
| MDCI Automation | Pennsylvania |
| MDE Semiconductor, Inc. | California |
| mDevelopers | |
| MDG, LLC | |
| MDI Access, Inc. | Illinois |
| MDI Biological Laboratory | |
| MDI Membrane Technologies, Inc. | |
| MDI Therapeutics | |
| Mdiastay | |
| MDisrupt | Texas |
| MDKdesign Enterprises Co., Ltd | New York |
| MDL autoMation | Georgia |
| MDNA Life Sciences, Inc. | Florida |
| MDNetlink, LLC | Missouri |
| MDofPC Doctor of Computers, LLC | Pennsylvania |
| MDS Disk Service | California |
| MDS Medical, LLC | Arizona |
| MDSI Ventures, LLC | Indiana |
| MDsyncNET | Indiana |
| MDT Marketing | |
| MDT Software | Georgia |
| MDxHealth | California |
| ME Labs, Inc. | North Carolina |
| ME-NH Computer Services, Inc. | Maine |
| Meacor, Inc. | |
| Meadow | |
| Meadow Design, Inc. | |
| Meadowhawk Biolabs, Inc. | Massachusetts |
| Meadowlark Aircraft Company | |
| Meadows Interactive | |
| Meagan Medical, Inc. | Washington |
| MealMe, Inc. | California |
| MealPal, Inc. | |
| MealSuite | Texas |
| MealTime | Oregon |
| MeaningCloud, LLC | New Jersey |
| Means Marketing Solutions, LLC | |
| Measurabl, Inc. | California |
| Measure Marketing Results, Inc. | |
| Measured Solutions, Inc. | South Carolina |
| Measured Transformation, LLC | |
| Measureful Analytics, Inc. | |
| MeasureNet Technology Ltd | Ohio |
| MeasureUp | Georgia |
| MeasuringU | Colorado |
| Meati, Inc. | |
| MeBeBot, Inc. | Texas |
| Mebias Discovery | Pennsylvania |
| Meca Enterprises, Inc. | Oklahoma |