| MD MKT S.A. | Buenos Aires |
| MDTec | Córdoba |
| MDTec Soluciones IT | |
| MedCom S.A. | Buenos Aires |
| Media 5 S.r.l. | Buenos Aires |
| Media Party | Buenos Aires |
| Media Social | Buenos Aires |
| Mediabit | Buenos Aires |
| Mediaclic | Buenos Aires |
| MediaExperts.com.ar | |
| Medic Electronica | Buenos Aires |
| MedTech | Buenos Aires |
| Meemba | Buenos Aires |
| Megevand Soft S.R.L. | Córdoba |
| Mensatel | Buenos Aires |
| Menta | Buenos Aires |
| Mepiache Agency | Buenos Aires |
| Mercado Libre Argentina | |
| MercoDigital | Buenos Aires |
| Mesi, S.R.L. | Buenos Aires |
| Mestizos | |
| Metacreativa | Buenos Aires |
| Metrotel | Buenos Aires |
| Michael Page | Buenos Aires |
| Micro Electrónica | Buenos Aires |
| Microbyte S.A. | Buenos Aires |
| Microcom Argentina S.A.. | Buenos Aires |
| MicroGestion | Buenos Aires |
| Microglobal Argentina, S.A. | Buenos Aires |
| Micronic Computacion | Buenos Aires |
| Microroe | |
| Microsap | Buenos Aires |
| Microsistemas | Buenos Aires |
| Microsoft Argentina | Buenos Aires |
| Microtec | Buenos Aires |
| Midas Consultores S.A. | |
| Milenium Web Solutions | Rio Negro |
| Mindia | |
| MindWare | Buenos Aires |
| Minet Artes Gráficas / Informática | Mendoza |
| Minexus | |
| MIROL | Buenos Aires |
| Mistyc | Buenos Aires |
| MKE | Buenos Aires |
| MKT Negocios | Buenos Aires |
| Mobile Computing | |
| Mobilenik | Buenos Aires |
| Mobilizaventas | Santa Fe |
| Moni Online, S.A.S. | |
| MovApps | Buenos Aires |