| Boston Salads & Provisions, Inc. MA | Manufacturing | 0 | — | F |
| Boston Sand & Gravel Co MA | Manufacturing | 0 | — | F |
| Boston Scientific CA | Manufacturing | 0 | — | A |
| Boston Scientific GA | Manufacturing | 0 | — | F |
| Boston Scientific IN | Manufacturing | 0 | — | C |
| Boston Scientific MN | Manufacturing | 0 | — | A |
| Boston Scientific PR | Manufacturing | 0 | — | A |
| Boston Scientific - Maple Grove 2020 MN | — | 0 | — | — |
| Boston Scientific Corporation FL | — | 0 | — | — |
| Boston Scientific Corporation MA | Transportation & Warehousing | 41 | $10,244,791 | A |
| Boston Scientific Corporation TX | — | 0 | — | — |
| Boston Scientific Corporation WA | — | 0 | — | — |
| Boston Semi Equipment LLC MA | Manufacturing | 0 | — | A |
| Boston Society for Architecture MA | Professional & Technical Services | 1 | $80,593 | — |
| Boston St Animal Hosp dba Harbor View Vet Hosp MD | Professional & Technical Services | 0 | — | A |
| Boston Standard Plumbing & Heating MA | Construction | 0 | — | F |
| Boston Strategic Partners, Inc. MA | Professional & Technical Services | 1 | $140,982 | — |
| Boston Teaparty Ships & Museum MA | — | 0 | — | — |
| BOSTON TECHNOLOGY CORPORATION MA | Professional & Technical Services | 2 | $100,000 | — |
| Boston Trust Walden Company MA | Finance & Insurance | 1 | $128,981 | — |
| Boston University MA | — | 0 | — | — |
| Boston Warehouse Trading Corp MA | Transportation & Warehousing | 0 | — | A |
| Boston Water and Sewer Commission MA | Construction | 0 | — | F |
| Boston Whaler FL | Manufacturing | 0 | — | D |
| Boston Window & Door, LLC MA | Retail Trade | 0 | — | B |
| BostonGene Corporation MA | Information & Media | 1 | $230,000 | — |
| Bostonian Boston Hotel MA | — | 0 | — | — |
| BostonLogix, Inc. MA | Professional & Technical Services | 1 | $116,397 | — |
| BOSTONREN LLC MA | Healthcare & Social Assistance | 1 | $90,230 | — |
| Bostwick Laboratories FL | — | 0 | — | — |
| Bostwick Laboratories VA | — | 0 | — | — |
| Bostwick Laboratories, Inc. NY | — | 0 | — | — |
| Bostwick Logistics, LLC GA | Transportation & Warehousing | 0 | — | D |
| BOSWELL LUMBER CO. PA | Manufacturing | 0 | — | F |
| Boswell Oil Company GA | Wholesale Trade | 0 | — | C |
| BOT AUTO CA INC TX | Professional & Technical Services | 7 | $203,026 | — |
| BOT AUTO TX INC TX | Professional & Technical Services | 12 | $34,837,595 | — |
| BOT TECHNOLOGIES LLC TX | Professional & Technical Services | 3 | $100,221 | — |
| Botanic Business Services MO | Retail Trade | 0 | — | A |
| Botanica Landscaping LP FL | Administrative & Waste Services | 0 | — | A |
| Botanical Designs LLC MN | Administrative & Waste Services | 0 | — | F |
| Botanical Designs, LLC CO | Administrative & Waste Services | 0 | — | F |
| Botanical Designs, LLC FL | Administrative & Waste Services | 0 | — | A |
| Botanical Designs, LLC GA | Administrative & Waste Services | 0 | — | A |
| Botanical Designs, LLC WA | Administrative & Waste Services | 0 | — | F |
| Botanical Research Institute of Texas TX | Arts & Entertainment | 0 | — | A |
| Botanicallabs CA | Manufacturing | 0 | — | A |
| Botanie Natural Soap Inc MT | Manufacturing | 0 | — | A |
| Botco, Inc. CA | Professional & Technical Services | 3 | $2,103,333 | — |
| Bothar Construction LLC NY | Construction | 0 | — | B |
