| Adcytherix | |
| Add&boost | Paris |
| Add-up | Paris |
| Addis.fr | Val-de-Marne |
| Addistronic | Seine-et-Marne |
| AddWorking | |
| Adealis-Ami Conseils | Paris |
| Adebeo | Paris |
| Adelanto | |
| Adelie Advisors S.A.S. | Paris |
| Adélie Informatique Conseil | |
| Adella | Aude |
| Adelysnet | Gironde |
| Adenis | |
| Adenium | |
| Adenora | Bas-Rhin |
| Adentis | Hauts-de-Seine |
| Adequate Communication | Loire-Atlantique |
| Ader Finance | |
| Adera | |
| Adergo | Paris |
| ADES | Haute-Garonne |
| ADEsoft | Paris |
| Adeunis | Isère |
| Adex Électronique | Ille-et-Vilaine |
| Adexcom | Paris |
| Adexos | Nord |
| ADF Référencement | Gironde |
| ADF Systèmes | |
| ADF.net | Hérault |
| Adfinitas | |
| ADG Soft | Métropole de Lyon |
| adhara France | Loiret |
| AdhexPharma S.A.S. | |
| Adi 16 | Charente |
| ADIC Info | Alpes-Maritimes |
| Adicom | |
| Adictiz S.A.S. | Nord |
| Adikteev | |
| Adilade | Vosges |
| Adilis | |
| Adimeo | Paris |
| Adines | Yvelines |
| ADIP2 | Loire-Atlantique |
| AdipoPharma S.A.S. | |
| Adipso | Bas-Rhin |
| Adison | Savoie |
| Adista | Meurthe-et-Moselle |
| ADIT Technopole Anticipa | |
| Aditel | Paris |