| MicroNetiks | Wyoming |
| Micronite, Inc. | California |
| Micronoma, Inc. | California |
| Micronotes, Inc. | Massachusetts |
| MicroNova, LLC | California |
| Micropac Industries, Inc. | Texas |
| Micropath Corporation | Colorado |
| Microphase Corporation | Connecticut |
| Microplex Printware Corporation | Ohio |
| microPOWER | Illinois |
| Micropulse, Inc. | Indiana |
| MicroPure Genomics, Inc. | |
| MicroQuin | Massachusetts |
| MicroRam Electronics, Inc. | Florida |
| MicroReplay, Inc. | Massachusetts |
| Microrite, Inc. | California |
| Microscan Systems, Inc. | Washington |
| MicroSeismic, Inc. | Texas |
| Microsel, Inc. | Minnesota |
| Microsemi | California |
| MicroServer | New Jersey |
| Microsite Masters, LLC | |
| Microsoft 365 Copilot | |
| Microsoft AI | Washington |
| Microsoft Bing Translator | |
| Microsoft Bing Webmaster Tools | Washington |
| Microsoft Build | Washington |
| Microsoft Corporation | Washington |
| Microsoft Developer | |
| Microsoft for Startups | Washington |
| Microsoft Internet Information Services | Washington |
| Microsoft Learn | Washington |
| Microsoft New England | Massachusetts |
| Microsoft Research Lab - New England | Massachusetts |
| Microsoft Research Lab - Redmond | Washington |
| Microsoft Visual Studio | Washington |
| Microsol Resources Corporation | Pennsylvania |
| MicroSource, LLC | Mississippi |
| Microspace Communications Corporation | North Carolina |
| Microspec Corporation | New Hampshire |
| MicroSphere Computers | Oregon |
| Micross | Florida |
| Microstar Computers | Florida |
| Microstar Laboratories, Inc. | Washington |
| Microstock, Inc. | Pennsylvania |
| MicroStrategy, Inc. | Virginia |
| MicroSupport, Inc. | Arizona |
| MicroSurgical Technology | |
| Microsystems Integrated Public Safety Solutions, Inc. | Massachusetts |
| MicroTech | Virginia |