| D-GRAPH | Bas-Rhin |
| D2B Consulting | |
| D3COM | |
| D3E Électronique S.A.S. | Aube |
| D@M Prod | Nord |
| Dactem | Gard |
| Dagoma | Nord |
| Dahu | Savoie |
| Dailymotion | Paris |
| Daitem | Bas-Rhin |
| Daiteo | |
| Dalibo | |
| Daltoner | Manche |
| Damaris | Métropole de Lyon |
| Damien Goubeau Développement | Haute-Garonne |
| DANEM | Val-de-Marne |
| Daniel Duverney | |
| Danphil Conseils | Hauts-de-Seine |
| Dapfor S.A.R.L. | Hauts-de-Seine |
| Dareboost | |
| Dareboost | |
| DareWin | |
| DARK | |
| Darktrace | Paris |
| Darsite S.A.R.L. | Paris |
| Dassault Systèmes | Yvelines |
| Data 4 Services | Paris |
| Data Factory | |
| Data Impact | |
| Data Legal Drive | |
| Data Micro Systems | Métropole de Lyon |
| Data Recrutement | |
| Data ScienceTech Institute | Paris |
| Data Syscom | Sarthe |
| Data Vision Systems S.A.R.L. | Nord |
| Data.gouv.fr | Paris |
| Datacapt | |
| Datacube | |
| Dataexis | |
| Dataflow Engineering | Var |
| DataFolio | |
| DataGalaxy | |
| Datagates | Paris |
| DataHawk | |
| Dataïads | |
| Datakili | |
| DATALP Groupe | Haute-Savoie |
| Datametric | Yvelines |
| Datanalyse | |
| Datananas | |