| Adnsa | Métropole de Lyon |
| Adobe Systems France S.A.S. | Paris |
| Adobis Group | |
| Adoc Talent Management | |
| Adocia | |
| ADOK | Gers |
| Adomia | Paris |
| adompc | Métropole de Lyon |
| ADONIS | Paris |
| Adonis Création | |
| ADOR Informatique | Yvelines |
| Adrexo | |
| Adrien Heury | Savoie |
| Adroma Conseil | |
| ads-COM | Loiret |
| AdScience | Paris |
| ADSEA | |
| Adsearch | |
| Adservio | |
| ADSLTV | Bas-Rhin |
| ADSOFTWARE | Haute-Savoie |
| ADTG Studio | Oise |
| AdThink | Métropole de Lyon |
| Advalorem | Ardèche |
| Advanced Accelerator Applications S.A. | |
| Advanced BioDesign | |
| Advanced Informatique | Val-de-Marne |
| Advanced Semiconductor Europe | Hauts-de-Seine |
| Advanced Tracking | Var |
| Advancy | |
| ADVEEZ | Haute-Garonne |
| ADVEEZ | |
| Adven Express | Paris |
| Advences | Paris |
| Advens | Nord |
| adVentures Startup Studio | |
| AdvEOTec | Essonne |
| Adveris | |
| Adverline | Paris |
| Advertis S.A.R.L. | Vosges |
| Advesya | |
| Advicenne S.A. | |
| Advisa.fr | Bas-Rhin |
| AdviseMe | |
| Advisto S.A.S. | Loire-Atlantique |
| ADvisuel | Haute-Garonne |
| Advize | |
| ADW Concept & Gestion | Bas-Rhin |
| ADW Network | Métropole de Lyon |
| Adways | Paris |