| Stanley Robotics | |
| Stanwell Consulting | |
| Star-Achats S.A.R.L. | |
| Starboost S.A.R.L. | |
| Starclay | |
| StarDust S.A.S. | Bouches-du-Rhône |
| STARFISH Bioscience | |
| Starform | Hauts-de-Seine |
| StarkAge Therapeutics | |
| StarOfService | |
| Starseed | |
| Start in Paris | Paris |
| Start-up | Ille-et-Vilaine |
| StarTech Normandy | Orne |
| StartHer | Paris |
| Startin’Blox | |
| Startup Academy | Paris |
| Startup For Kids | |
| Startup Inside | |
| Startup Sesame | Paris |
| Startup.info | Paris |
| Startup365 | Haute-Garonne |
| StartupBRICS | Bouches-du-Rhône |
| StartupVillage | |
| StartX S.A.S. | |
| Starware It Services | |
| StarXpert | Métropole de Lyon |
| Statigest | Val-de-Marne |
| Station F | Paris |
| Stations-e | |
| Statshop | |
| STCI | Gironde |
| STD.fr | Hérault |
| Steeple | |
| Stefano Fresch | |
| Steliau Technology | Hauts-de-Seine |
| Stellantis Financial Services Europe S.A. | |
| Stellar Telecommunications S.A.S. | |
| Stellia | |
| Stem Genomics | |
| Stem Group | |
| StemInov S.A.S. | |
| Step Pharma | |
| Stéphane Cazenave | Paris |
| Stéphane Charbeau | Charente |
| Stéphanie Sec | Val-de-Marne |
| Sterren | |
| Steyla Digital | |
| STid | Bouches-du-Rhône |
| Stiilt | |