| MatiPay S.r.l. | |
| Matrix Media S.r.l. | Reggio Emilia |
| Matteo Bodi | |
| Mavida S.n.c. | Turin |
| Max Application | Turin |
| Max Software S.r.l. | Ravenna |
| Maxi Mobility S.B. | |
| Maxidata S.r.l. | Pavia |
| Maxisito | Rome |
| MazzMedia | |
| MBS Media Communication | |
| Mc4Software Italia S.r.l. | Turin |
| Meadowlark Optics, Inc. | |
| Meccanizzazioni moderne & Sistemi S.r.l. | Isernia |
| Mecdata S.r.l. | Bologna |
| MechWorks S.r.l. | Bologna |
| Medea Informatica S.r.l. | Cuneo |
| Medea S.r.l. | |
| MedEA Telemedicina | Potenza |
| Media Brain S.r.l. | Modena |
| Media Consulting S.r.l. | Forlì-Cesena |
| Media Informatica | Rome |
| Media Lario S.r.l. | |
| Media net S.a.s. | Cosenza |
| Media Net S.n.c. | Friuli-Venezia Giulia |
| Media Power S.r.l. | |
| Media Service Italia S.r.l. | |
| Mediabros | Verona |
| Mediacy S.r.l. | |
| Mediafactory Torino | |
| Medialine Group | Venice |
| Medialine Group S.r.l. | |
| mediaNET S.r.l. | Belluno |
| MediaPharma S.r.l. | |
| Mediarete | Verona |
| Mediasecure S.r.l. | Florence |
| Mediaservice.net S.r.l. | Turin |
| MediaSoft.it | Padua |
| MediaStudio | Pesaro and Urbino |
| Mediastudio S.r.l. | Friuli-Venezia Giulia |
| Mediatech S.r.l. | Monza and Brianza |
| Mediatrix | Cagliari |
| Mediaworld.it | Monza and Brianza |
| Medical Microinstruments, Inc. | Pisa |
| Medicalverso S.r.l. | |
| Medici Automazioni S.r.l. | Parma |
| Medicilio | Milan |
| MedTech Catalyst | Milan |
| Meetecho S.r.l. | |
| Meetweb S.r.l. | |