| Augural / Strateo | |
| Augure | |
| Augusta Reeves Group | |
| Aunis Informatique | Yonne |
| Auphys | Isère |
| AURA Equipements | Paris |
| Auriga | |
| Auriga Partners | |
| Auriga Partners | |
| Aurobac Therapeutics | |
| Ausha S.A.S. | |
| Australis | Var |
| Australis Intelligence | Var |
| Ausy | Hauts-de-Seine |
| Authentic Group | Loire-Atlantique |
| Autis | Val-d'Oise |
| Auto-Entrepreneur.fr | |
| Auto-Gestion-Entrepreneur.fr | Paris |
| Automatismes Services | Seine-et-Marne |
| Automotive Cells Company | |
| Autonomy | |
| Autorité des marchés financiers | |
| Autoweb-Creator | Nord |
| Auxicom | Loire-Atlantique |
| Auxilia | |
| Avaelys | Bouches-du-Rhône |
| Avancenet | Paris |
| Avanguard | |
| Avanista | |
| Avanquest Software | Hauts-de-Seine |
| Avanseo S.A.S. | |
| AvantageWeb | Loire-Atlantique |
| Avanteam | Yvelines |
| Avanti | Ille-et-Vilaine |
| Avanti Technologies | Paris |
| Avanti Telecom | Loire-Atlantique |
| Avelia | |
| AvenAo | Yvelines |
| Avenda | Val-d'Oise |
| Avenir Conseil | Hauts-de-Seine |
| Avenir Informatique | |
| Avenir technologie | Vienne |
| Avenir Telecom | Bouches-du-Rhône |
| Avesta | |
| Avicenna.AI | |
| Avisia | |
| Aviso and co | Paris |
| Avisto | Alpes-Maritimes |
| Aviti | |
| Aviwell | |