| Yodatech | Bouches-du-Rhône |
| Yogosha S.A.S. | Paris |
| Yokai | |
| Yole Group | |
| Yomoni | |
| Yoni Groupe | Isère |
| YOODA | Hérault |
| YOOI | |
| Yooji | |
| Yoolink | Paris |
| YoolinkPro | Paris |
| Yoorz | |
| You Don’t Need a CRM | Paris |
| You2You | Paris |
| youARhere | Paris |
| Youdemus | Paris |
| Youlead | Indre-et-Loire |
| YouMeO | |
| Youninfo | Charente-Maritime |
| Younited S.A. | |
| Younited-Credit | |
| Yourax | Nord |
| Yourbo | |
| Yousign | Calvados |
| YouStock | |
| YouzWeb | Nord |
| YperLine | Nord |
| Yposkesi S.A.S. | |
| Ypso-Facto | |
| ysalid | Val-d'Oise |
| Yseop | |
| YSOPIA Bioscience | |
| YTY | |
| Yubo | |
| Yumens | Ille-et-Vilaine |
| Yuto | |
| Yuzzit | |
| Yzi | Oise |
| Yziprod | Métropole de Lyon |
| YZR | |
| Zack S.A.S. | |
| Zaclys | |
| Zadient Technologies S.A.S. | |
| Zaion | |
| ZALIX Biométrie | Seine-Saint-Denis |
| Zanteris | |
| Zapilou | Isère |
| Zapsolution | Isère |
| Zataz | Nord |
| ZBO Media | Paris |