| Aditi | Nord |
| Adjuvatis | |
| Adler Technologies | |
| Adloop | |
| ADM-PC | Ille-et-Vilaine |
| Adm21 | Hauts-de-Seine |
| AdmanTIC | |
| Admicom | |
| ADN Ouest | Loire-Atlantique |
| ADN PROG | Haute-Savoie |
| ADNET | Marne |
| Adnovae Conseil et formation webmarketing | Isère |
| AdnPix | Manche |
| 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 Life Solutions | |
| Advanced Semiconductor Europe | Hauts-de-Seine |
| Advanced Tracking | Var |
| Advancy | |
| ADVEEZ | Haute-Garonne |
| Adven Express | Paris |
| Advences | Paris |
| Advens | Nord |
| adVentures Startup Studio | |
| AdvEOTec | Essonne |