| BtoB Development | |
| Bubblemaps S.A.S. | |
| Bucéphale Finance | |
| BuCoDI S.A.S. | Côtes-d'Armor |
| Buddyweb | |
| Bug & Boot S.A.R.L. | Val-d'Oise |
| Buga World | |
| Bugbusters | Hauts-de-Seine |
| Bugbusters | |
| Builders HEC Paris | |
| Bulldozair | Paris |
| Bunkai | |
| Bureau d'ingénierie Richard Domon | Yvelines |
| BureauSoft | Hauts-de-Seine |
| Bureautique & Communication | Orne |
| Burgundy School of Business | |
| BusiBoutique.Com | Bas-Rhin |
| Business & Decision | Paris |
| Business & Decision | |
| Business At Work S.A.S. | Paris |
| Business Club France-Luxembourg | |
| Business Document | Hauts-de-Seine |
| Business France | |
| Business Geografic | Métropole de Lyon |
| Business Informatique Conseil | Hauts-de-Seine |
| Business lab | Hauts-de-Seine |
| Business Services | Yvelines |
| Businessline | Hauts-de-Seine |
| BusinessTech | Alpes-Maritimes |
| Buster.Ai | |
| Butternut Services | |
| BuyCo | |
| Bwat | |
| By The Way | Nord |
| BySearch | |
| C'PRO | Drôme |
| C-DESIGN Fashion | Paris |
| C-ent | Moselle |
| C-ISOP S.A.S. | Métropole de Lyon |
| C-Micro | Haute-Garonne |
| C.I.F. Circuit Imprimé Français | Yvelines |
| C12 | Paris |
| C12 Quantum Electronics | |
| C2C Réseaux | Oise |
| C2Care | |
| C2i Dépannage Informatique | Puy-de-Dôme |
| C2S Bouygues | Yvelines |
| C3rb | Aveyron |
| C4 Ventures | |
| C4W | Hérault |