| B&C | Bouches-du-Rhône |
| B-APPLI | Isère |
| b-com | Ille-et-Vilaine |
| B2CLOUD | |
| B2DIGIT | |
| B4F | Isère |
| BaaO | Paris |
| Bâbord Amures | Morbihan |
| Bachelor EGC d’Occitanie | |
| Back Market | |
| Backedge Multimedia | Gers |
| Bad Monkey | |
| Badsender | Aude |
| Bakhtech | |
| Bakino | |
| Balistik | Eure-et-Loir |
| Balmes Transplantation | |
| BALYO S.A. | |
| BAM | |
| Bankin | Paris |
| Baobab Group | |
| Barcoda | |
| Bassetti Group | Isère |
| Bastard Informatique | Haute-Garonne |
| Bastion | |
| Batch | |
| Batifranc | |
| Batima Electronic | Bas-Rhin |
| Batiroc BPL | |
| Batterieprofessionnel | |
| Bayesia S.A.S. | Mayenne |
| Bayo | Yonne |
| Bazile Telecom S.A. | Bouches-du-Rhône |
| Bazimo | |
| bb&b communication et marketing industriel | |
| BBox News | Paris |
| BBS consultant internet | Nord |
| BBS Informatique | Eure-et-Loir |
| BCI Aerospace | |
| BCI Pharma | |
| BCT Consulting | |
| BCV (Basecamp Vascular) | |
| BD Multimedia | Paris |
| BDL Informatique | Maine-et-Loire |
| Be Activ'IT | |
| Be API | Paris |
| Be Cloud | |
| Be Soft | Bouches-du-Rhône |
| Be-Cloud | |
| Be-Coworking | |