| Ikoula Net S.A.S. | Hauts-de-Seine |
| IKSIS | Saône-et-Loire |
| Iktos | Paris |
| Ilek | |
| Ilex International | Hauts-de-Seine |
| ILIAD | Paris |
| Iliane | Loire-Atlantique |
| ILIAS | Essonne |
| Illico Réseau | Loire-Atlantique |
| Illicoweb | Territoire de Belfort |
| Illisite | Hauts-de-Seine |
| Illuin Technology | |
| Iloadev | Yvelines |
| Iloclic | Doubs |
| ILTA | Val-de-Marne |
| ILTOO Pharma S.A.S. | |
| Ima'diff Mediactive Digital S.A.S. | Paris |
| ImaBiotech | |
| Image & Net | Loire-Atlantique |
| Imagence | Hauts-de-Seine |
| Images & Réseaux | |
| ImagesCréations | Loire-Atlantique |
| Imagination Machine | |
| Imagine Soft | Bouches-du-Rhône |
| Imago Numeris | Calvados |
| Imagospirit | Seine-Maritime |
| Imani Group | |
| Imatag | |
| IMATECH | |
| Imaxio S.A. | |
| ImCheck Therapeutics | |
| IMD Informatique | Métropole de Lyon |
| Imdat Ozkale | Puy-de-Dôme |
| IMDEO | Paris |
| Iminance | |
| Immergis S.A.S. | Hérault |
| Immersion S.A.S. | |
| Immersiv.io | |
| Immersive | Val-de-Marne |
| IMMOBILIER | Alpes-Maritimes |
| Immos TM | Gard |
| Immosoft | Bouches-du-Rhône |
| Immunxperts | |
| ImmunXperts S.A. | |
| Immusmol S.A.S. | |
| iMotep | Hautes-Pyrénées |
| Impact Technologies | Essonne |
| Impact-Referencement.com | Nord |
| Impact-web | Bas-Rhin |
| Impala Webstudio | |