| Dataneo | |
| Datapole | |
| Dataprint | Paris |
| Dataquitaine | Gironde |
| Datarox | |
| Datavenir | Haute-Savoie |
| Dataveyes | |
| DataVLab | |
| Datawords | |
| Datexim | |
| Datronic | Val-de-Marne |
| Datso Gallery | Bas-Rhin |
| Dattak S.A.S. | |
| DavAgency | |
| Daveo | |
| DAVI | Essonne |
| David Groult | Nord |
| David Telecom | Haute-Savoie |
| David-webdesigner.fr | Yvelines |
| Davidson | |
| Dawan | Loire-Atlantique |
| Daxium Software | Paris |
| Day One Entrepreneurs & Partners | |
| db-ip.com | |
| DBM Technologies | Métropole de Lyon |
| Dbmedia | Pyrénées-Orientales |
| DBSA | Essonne |
| DBV Technologies | |
| DBV Technologies S.A. | |
| DCbrain | |
| DCFI | Vaucluse |
| Dclic06 | Alpes-Maritimes |
| DDS Logistics | Hauts-de-Seine |
| de la Lune à la Lumière | Seine-et-Marne |
| De Medicis | |
| Deal.fr | Gironde |
| Dealing-Room | Val-de-Marne |
| Dealt | |
| Deblock S.A.S. | |
| Debugbar | Haute-Garonne |
| Decade | Paris |
| Decasoft | Paris |
| Decelect | Aisne |
| Décibel Informatique | Bas-Rhin |
| Decideo | |
| DECISION - Études & Conseil | |
| Déclic France Informatique | Gard |
| Déclic-e média | Vienne |
| Déclic-informatique | Hérault |
| Declic-media | Haute-Vienne |