| Blue Iris Graphics | Wisconsin |
| Blue Iris Marketing | |
| Blue Iris Webdesign | Massachusetts |
| Blue Jeans Cable | Washington |
| Blue Label Labs | New York |
| Blue Label Power | California |
| Blue Lagoon | Maryland |
| Blue Lake Biotechnology | Georgia |
| Blue Lance, Inc. | Texas |
| Blue Laser Digital | Ohio |
| Blue Layer | Texas |
| Blue Light Labs, Inc. | Georgia |
| Blue Line Forensics, LLC | California |
| Blue Lizard Technologies, Inc. | North Carolina |
| Blue Magnet interactive | Illinois |
| Blue Mahoe Capital | Florida |
| Blue Mantis | New Hampshire |
| Blue Marble Communications, Inc. | |
| Blue Marble Enterprises, Inc. | Colorado |
| Blue Marble Geographics | Maine |
| Blue Marble Health | |
| Blue Marlin Systems | New Jersey |
| Blue Medora | Michigan |
| Blue Monkfish | |
| Blue Moon Industries | Rhode Island |
| Blue Moon Internet Corporation | New York |
| Blue Moon Software | Texas |
| Blue Moose Design, LLC | Washington |
| Blue Morpho Technologies, LLC | Vermont |
| Blue Mountain College Computer Science | Mississippi |
| Blue Mountain Data Systems, Inc. | Virginia |
| Blue Mountain Internet | Washington |
| Blue Mountain Quality Resources, Inc. | Pennsylvania |
| Blue Mountain Web | |
| Blue Noda | |
| Blue Note Computing, Inc. | Vermont |
| Blue Note Ventures | Colorado |
| Blue Nova Marketing | |
| Blue Oak Energy, Inc. | California |
| Blue Oak Technology Solutions | Missouri |
| Blue Ocean Ideas | |
| Blue Ocean Life Sciences | Massachusetts |
| Blue Ocean Systems, LLC | Pennsylvania |
| Blue Ocean Technology, LLC | |
| Blue One Communications, Inc. | Kentucky |
| Blue Onion Media | Colorado |
| Blue Origin | Washington |
| Blue Phoenix Creative | |
| Blue Planet | Maryland |
| Blue Point Capital Partners | Ohio |