| Alvie 1 | |
| Alwaysdata | |
| Alyra | |
| Alyseo | Seine-Saint-Denis |
| Alzohis S.A.S. | |
| Alzprotect | |
| Alzura | |
| Am-Creation | Charente-Maritime |
| Amabis | Hauts-de-Seine |
| Amalia.io | |
| Amalto Technologies S.A. | Paris |
| Amarisoft | |
| AMAYAS Consulting | |
| AMBA | Bouches-du-Rhône |
| Ambianceweb | Yonne |
| Ambika | Val-de-Marne |
| Ambiotis | |
| Ambler | |
| Amborella | |
| Ambra | Var |
| AMC | Haute-Garonne |
| AMD Électronique | Haute-Savoie |
| AMD Informatique | Aude |
| Amedia Solutions | |
| Amedis | |
| Amen | Paris |
| AMEOS | Bas-Rhin |
| American Chamber of Commerce in France | |
| Ameris Informatique | Gironde |
| Améthyste | Paris |
| Amexio | Hauts-de-Seine |
| AMGE | |
| Amiciel | Isère |
| AMIG | Paris |
| Amigest | Métropole de Lyon |
| Amiral Technologies | |
| Amitel | Métropole de Lyon |
| AMJ Groupe | Paris |
| AMMI.DSI | Loiret |
| Amneo | Nord |
| Amoéba | |
| Amolyt Pharma | Métropole de Lyon |
| Amon Tech | Paris |
| Amos Computers | Côte-d'Or |
| Amossys | |
| AMP Networks | Métropole de Lyon |
| Amparis | Val-d'Oise |
| Amphitech | Paris |
| Amphitech | |
| AMR Informatique | Bas-Rhin |