| Blackburn Architects, PC DC | Professional & Technical Services | 1 | $90,000 | - |
| Blackhawk Country CA | - | 0 | - | - |
| Blackhawk Country Club CA | Arts & Entertainment | 0 | - | B |
| Blackhawk Country Club-Dnvll CA | - | 0 | - | - |
| Blackhawk Mining, LLC WV | - | 0 | - | - |
| Blackhawk Mining, LLC Hamppden Coal, LLC Hampden #2 Mine Hampden Prep Plant WV | - | 0 | - | - |
| Blackhawk Mining, LLC Panther Creek Mining, LLC WV | - | 0 | - | - |
| Blackhawk Network, Inc. CA | Finance & Insurance | 5 | $134,258 | - |
| Blackhawk Services Corp IA | - | 0 | - | - |
| Blackhawk Transport TX | Transportation & Warehousing | 0 | - | D |
| Blackhawk Transport WI | Transportation & Warehousing | 0 | - | C |
| Blackjack Enterprise, Inc. MS | - | 0 | - | - |
| Blackjewel VA | - | 0 | - | - |
| Blackline Systems, Inc. CA | Professional & Technical Services | 25 | $162,783 | - |
| Blackmon-Mooring of Houston, LLC TX | Administrative & Waste Services | 0 | - | - |
| Blackpoint Holdings LLC CO | Professional & Technical Services | 1 | $160,000 | - |
| Blackrock Automation Inc. TX | Professional & Technical Services | 1 | $126,547 | - |
| BlackRock Corporation US, Inc. NJ | Finance & Insurance | 11 | $159,355 | - |
| BlackRock Financial Management, Inc. NJ | Finance & Insurance | 207 | $194,114 | - |
| BlackRock Index Services, LLC NJ | Finance & Insurance | 3 | $143,833 | - |
| BlackRock Institutional Services, Inc. NJ | Finance & Insurance | 7 | $168,414 | - |
| BlackRock Institutional Trust Company, N.A. NJ | Finance & Insurance | 11 | $179,136 | - |
| BlackRock Investment Management, LLC NJ | Finance & Insurance | 24 | $153,296 | - |
| Blackrock Microsystems, LLC UT | Manufacturing | 6 | $107,500 | - |
| BlackRock, Inc. CA | - | 0 | - | - |
| Blackstar Delivery LLC GA | Transportation & Warehousing | 0 | - | F |
| Blackstone MA | Healthcare & Social Assistance | 0 | - | F |
| Blackstone Advanced Technologies LLC NY | Manufacturing | 0 | - | C |
| Blackstone Gaming - Hustler Casino CA | - | 0 | - | - |
| Blackstone Gaming LLC at Casino M8trix CA | - | 0 | - | - |
| Blackstone Gaming LLC dba Larry Flynt's Lucky Lady Casino CA | - | 0 | - | - |
| Blackstone Gaming LLC operations at Crystal Casino CA | - | 0 | - | - |
| Blackstone Gaming LLC operations at Ocean's Eleven Casino CA | - | 0 | - | - |
| Blackstone Gaming operations at Hustler Casino CA | - | 0 | - | - |
| Blackstone Gaming, LLC CA | - | 0 | - | - |
| Blackstone Hotel IL | - | 0 | - | - |
| Blackstone Trailer TX | Manufacturing | 0 | - | F |
| Blackstone, Inc. NY | Finance & Insurance | 39 | $180,000 | - |
| Blackstraw LLC FL | Professional & Technical Services | 1 | $145,000 | - |
| Blacktail R, LLC MT | Manufacturing | 1 | $93,246 | - |
| BlackTalon Enterprises, Inc. CA | - | 0 | - | - |
| Blackwell Consolidation, LLC OR | Transportation & Warehousing | 0 | - | C |
| Blackwell North America, INC NJ | - | 0 | - | - |
| Blackwood Finish Carpentry INC MA | Construction | 1 | $72,613 | - |
| Bladen County Schools NC | Educational Services | 1 | $42,020 | - |
| Blades of Green MD | Administrative & Waste Services | 0 | - | F |
| Blades On 34th LLC NY | Accommodation & Food Services | 2 | $76,710 | - |
| Bladework Games LLC CA | Information & Media | 1 | $140,000 | - |
| Blaine Brothers Maintenance, Inc. MN | Other Services | 0 | - | F |
| Blaine Brothers, Inc. MN | Transportation & Warehousing | 0 | - | D |