| Blackdove, Inc. | |
| Blackfoot | Montana |
| BlackFrog Agency | |
| Blackgate Creative | |
| BlackGirlsCode | California |
| Blackhawk Aerospace | Texas |
| Blackhawk Digital Marketing | |
| Blackhawk Partners, Inc. | |
| Blackhawk Systems, Inc. | Michigan |
| Blackhawk Technical College | Wisconsin |
| Blackhorn Ventures | Colorado |
| BlackInk AI, LLC | |
| Blackland Data Management | |
| Blacklight Solutions | Texas |
| Blackline | California |
| BlackLocus, Inc. | |
| BlackOak Analytics | Arkansas |
| Blackout Design, Inc. | |
| BlackPearl Technology, Inc. | |
| BlackPoint | Washington |
| Blackpoll Capital Partners, LLC | District of Columbia |
| Blackrock Networks, Inc. | Massachusetts |
| Blackrock Neurotech | Utah |
| Blacks In Technology, LLC | |
| Blacksheep, Inc. | Kansas |
| BlackSky | Virginia |
| Blacksmith Agency | Arizona |
| Blacksmith Applications, Inc. | Massachusetts |
| Blacksmith Medicines | California |
| Blacksmith Software, Inc. | |
| Blackstone Agency | |
| Blackstone and Cullen | Georgia |
| Blackstone Technology Group | California |
| Blacksun Software | Texas |
| Blacktech Week | Ohio |
| Blackthorn Vision, LLC | |
| Blacktop Capital, LLC | California |
| Blacktop Consulting | |
| Blackwall | |
| Blackwell | |
| BlackWing Creative | Washington |
| Blackwood Creative | Indiana |
| BlackWood Systems, Inc. | Arizona |
| Blade Technologies, Inc. | Missouri |
| Blaine Warren Advertising, LLC | |
| Blair Communications, Inc. | Texas |
| Blair Marketing | |
| BLAIRCOMM | California |
| Blairex Laboratories, Inc. | |
| Blaize | California |