| Blue Wheel Media | Michigan |
| Blue World | |
| Blue Zoo Creative | |
| Blue Zoo Web | |
| Blue's ArtHouse Graphics & Web Design | Missouri |
| Blue.cloud, Inc. | Florida |
| BlueAllele Corporation | Minnesota |
| BlueAlly | North Carolina |
| BlueArc Biosciences | |
| BlueBay Automation, LLC | |
| Bluebeam, Inc. | California |
| BlueBean Technologies, Inc. | |
| Blueberry Ln. | Illinois |
| Bluebird Auto Rental Systems, L.P. | New Jersey |
| Bluebird Bio, Inc. | Massachusetts |
| Bluebird Climate | |
| Bluebird International | |
| Bluebird Technologies | |
| Bluebird Websites, LLC | Louisiana |
| Bluebook | |
| BlueCart, Inc. | |
| BlueCatBio MA, Inc. | |
| BlueChalk Software | Missouri |
| BlueCharm | California |
| BlueCheck, Inc. | Texas |
| Bluecore, Inc. | |
| Bluecosmo | Washington |
| BlueCross BlueShield Venture Partners, L.P. | Illinois |
| BlueDelta Capital Partners | Virginia |
| Bluedogink | Florida |
| Bluedomino | Massachusetts |
| Bluedot | |
| Bluedot Innovation | California |
| Bluedot Technologies, Inc. | Delaware |
| BlueEdge Business | |
| BlueEdge Consulting, LLC | Pennsylvania |
| Blueera | Texas |
| BlueFactor | Connecticut |
| Bluefield College | Virginia |
| Bluefield State University College of Science, Technology, Engineering and Mathematics | West Virginia |
| Bluefin Biomedicine | Massachusetts |
| Bluefin Payment Systems, LLC | Georgia |
| Bluefin Technology Group | Florida |
| Bluefin Technology Partners | Massachusetts |
| Bluefire Productions, LLC | Washington |
| Bluefish Labs, Inc. | |
| BlueFlag | |
| BlueFlag Security | |
| blueflite | |
| BlueFolder Software, Inc. | Colorado |