| BFC Croissance | |
| BforCure | |
| BG Info | Moselle |
| BG Partners | Gironde |
| BGD | Gard |
| BGS Associés | Paris |
| BHInternet | |
| BI Group | |
| BI Ready | |
| BIA Consulting | |
| BiBOARD | Paris |
| BICE | Loiret |
| Bifröst S.A.S. | |
| Big Youth | Paris |
| Bigblue | |
| BigBooster | |
| BigUp For Startup | Hérault |
| Bilendi S.A. | Paris |
| Bilendi Technology S.A.R.L. | |
| Bilendi Technology S.A.R.L. | |
| Bilhi Genetics | |
| Billiv | Paris |
| BillJobs | Paris |
| BIMData.io | |
| Bimp | Métropole de Lyon |
| BinaryBiz | Paris |
| Binomia | Haut-Rhin |
| Bio Elpida | |
| Biocellvia | |
| Biocodex | |
| Biocodex | |
| Biocorp | |
| BioCydex | |
| Biodol Therapeutics | |
| Bioeconomy for Change | |
| BioFilm Control | |
| Bioinformatique en Lorraine | Moselle |
| Biolevate S.A.S. | |
| Biomemory | |
| bioMerieux | |
| Biomillenia S.A.S. | |
| Biomodex | |
| Biomunex | |
| Bionatics | Hérault |
| BioNet | |
| Biophta | |
| Biophytis | |
| Biopôle Clermont-Limagne | |
| Biopredic International | |
| Bioprojet | |