| Bellman | |
| BeProductiv | Paris |
| Bercel Informatique | Maine-et-Loire |
| Bercytel S.A.S. | Val-de-Marne |
| Berry Buro | Indre |
| Bertin IT | Yvelines |
| Bertin Technologies | |
| Berty Technologies | |
| BeSMART-edu | Somme |
| Bestcours.com | Paris |
| BestPaye.fr | Paris |
| Betarena | |
| BeTomorrow | Gironde |
| Betoobe | |
| Betterway | |
| BeWe | Nord |
| BEWEB | Ille-et-Vilaine |
| Bewoopi | Paris |
| Bexter | Var |
| BFC Croissance | |
| BforBank | Hauts-de-Seine |
| BG Info | Moselle |
| BG Partners | Gironde |
| BGD | Gard |
| BGS Associés | Paris |
| BHInternet | |
| BI Group | |
| BIA Consulting | |
| BiBOARD | Paris |
| BICE | Loiret |
| Bifröst S.A.S. | |
| Big Youth | Paris |
| Bigblue | |
| BigBooster | |
| BigChange | |
| BigUp For Startup | Hérault |
| Bilendi S.A. | Paris |
| 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 | |