| Name | Region |
|---|---|
| Tenqi | Paris |
| TER Informatique | Marne |
| Teranga Software | |
| Teréga | |
| TerraNIS | |
| Terres Inovia | |
| Territoire du Web | Haute-Garonne |
| Tersedia | |
| Tesalys | |
| Tesseract Solutions | |
| Tessi | Isère |
| Tessi customer marketing | Yvelines |
| Tesuji Soft | Haute-Vienne |
| Tête à Clic International Multimédia | Deux-Sèvres |
| Tetradis | Isère |
| Texcell | |
| Texcell S.A. | |
| Texio.com | Paris |
| TFC Rhône-Alpes | Métropole de Lyon |
| TG Informatique | Bouches-du-Rhône |
| TGI Maritime Software | Nord |
| TGS France | Maine-et-Loire |
| Thabor Therapeutics | |
| Thalamus | Paris |
| Thalassa | Loire-Atlantique |
| Thales | |
| Thales Alenia Space | |
| Thales Group | |
| Thales SESO S.A.S. | |
| Thalie | Paris |
| The Blox | |
| The Cantillon | |
| The Game Bakers | Paris |
| The GNOME Project | Hauts-de-Seine |
| The Good Seat S.A.S. | |
| The Liveyard | |
| The Machinery | |
| The Mobile-First Company | |
| The Persuaders | Paris |
| The Start-up Elevator | Paris |
| Theben S.a.r.l. | |
| TheCodingMachine | |
| Thedo | |
| TheFork | Paris |
| Théia | Hauts-de-Seine |
| TheKeys | |
| Thelia | |
| thém-is | Meurthe-et-Moselle |
| Thema-Web Services | Ille-et-Vilaine |
| TheNode Lab |