| Bastyr University | Washington |
| Basware | Connecticut |
| Basys Processing, Inc. | Kansas |
| Bat Call Identification | Missouri |
| Batch Creative | |
| Batchex.com, Inc. | |
| BatchGeo, LLC | |
| BatchService | Arizona |
| Bates College Digital and Computational Studies | Maine |
| Bates College Mathematics | Maine |
| Bates Technical College | Washington |
| BatesMeron Sweet Design, Inc. | |
| Bath Savings Institution | |
| Batky-Howell | Colorado |
| Baton Market, Inc. | New York |
| Baton Rouge Macintosh Users Group | Louisiana |
| Batoul Apps | |
| Battery Ventures | Massachusetts |
| batteryPOP, LLC | |
| BattGenie, Inc. | Washington |
| Battle Born Venture | Nevada |
| Battlefy, Inc. | |
| Battswap Ltd | California |
| Batwin + Robin Productions, Inc. | |
| Baudax Bio, Inc. | Pennsylvania |
| Baugh Graphic Design | Kansas |
| Baugher Consulting, LLC | Pennsylvania |
| Baughn Engineering, Inc. | |
| Bauplan | |
| Baus Systems, LLC | Washington |
| Bausch + Lomb | Missouri |
| Bausch + Lomb, Inc. | New Jersey |
| Bavelle Technologies | New Jersey |
| Baxter Codeworks | Oregon |
| Baxter International, Inc. | |
| Baxture | |
| Bay Angels | California |
| Bay Area Automated Mapping Association | California |
| Bay Area Circuits, Inc. | California |
| Bay Area Graphics & Marketing | Florida |
| Bay Area IT Pros | California |
| Bay Area Linux Users Group | California |
| Bay Area Noble Image | California |
| Bay Area Online Marketing | California |
| Bay Atlantic University | District of Columbia |
| Bay BioSciences, LLC | |
| Bay City Capital, LLC | California |
| Bay College | Michigan |
| Bay Computer Associates | Rhode Island |
| Bay E.Solutions & Technology, LLC | |