| Airbus | |
| AIRCast | Alpes-Maritimes |
| Aire Informatique | Paris |
| Airicom | Paris |
| AirJob | |
| Airmob | |
| AIRRIA | Isère |
| Airweb | Hauts-de-Seine |
| Aisnedit | |
| AIVA Technologies S.A.R.L. | |
| Aive | |
| Aix Informatique | Savoie |
| Aix Marseille Université | Bouches-du-Rhône |
| AJ Conseil | |
| AJ Soft | Vendée |
| AJ2L Informatique | Rhône |
| AJANS | |
| AJC>COM | Rhône |
| Ajcréa | Loire-Atlantique |
| Ajoo | |
| Akabia | |
| Akalmie | Bas-Rhin |
| Akeneo | Loire-Atlantique |
| Akio | Paris |
| Akisiweb | Paris |
| Akori | Savoie |
| Akoya Group | |
| Aktan | |
| Akticom | Haute-Garonne |
| Aktio | |
| AKTO | |
| Akuiteo | |
| AKUR8 | |
| Akuter Technologies S.A.R.L. | Rhône |
| Akyos Communication | Côte-d'Or |
| Aladom | |
| Alan | Paris |
| Alawar | Paris |
| Alaxione | |
| Alaya.bio | |
| Albert Hofmann | Côte-d'Or |
| Albinet | |
| Albus | |
| ALC Informatique | Val-de-Marne |
| Alcatel Submarine Networks | |
| Alcea | Essonne |
| Alchemy | Paris |
| Alciom | Yvelines |
| Alcom | Alpes-Maritimes |
| Alcuin | Maine-et-Loire |