| Multimédia Technologie Informatique | Paris |
| Multiphone Netcom | Métropole de Lyon |
| Multipower | Paris |
| Multitex | Loire |
| Multiwave Technologies AG | |
| MUniversity | |
| MunSoft | Paris |
| Museovation | |
| Mussot Web 21 | Côte-d'Or |
| Must Informatique | |
| MUSTANG Formation Conseil | Hauts-de-Seine |
| Mutabilis | |
| MVD Cores | Haute-Garonne |
| MVG | Paris |
| My Check Experience | Seine-Saint-Denis |
| My Gestion Privée | |
| My IBS Group | |
| My Lucky Day | |
| My Money Group | |
| My Mooc | Paris |
| My-Serious-Game | |
| myAE.fr | |
| MyBrain Technologies | |
| MyCommunIT | Hauts-de-Seine |
| MyCompanyFiles | |
| MyConnecting | |
| myCowork | |
| MyCVThèque | Paris |
| MyDataModels | |
| Mydral | Paris |
| myEboutique | Hérault |
| MyFanGroup S.A.S. | Hauts-de-Seine |
| MyFit Solutions | |
| MyFrenchStartup | Hauts-de-Seine |
| Myfuture | |
| MyHeritage Ltd | |
| MyJob.Company | |
| mylight150 | |
| myLittleTools | Val-d'Oise |
| MyNelis | Hérault |
| MyNeosurf | Paris |
| MyNoraty | |
| Myosotis | Savoie |
| MyPRM | |
| Myr.ai | |
| MyReport | |
| Myriad S.A.R.L. | Haute-Garonne |
| Myriade | |
| MyScript | Loire-Atlantique |
| mySofie | |