| M 90 RADIO 89.9 | — |
| Mar Del Plata Fm 103.7 Radio Mitre | — |
| Mar Del Plata Fm 106.3 La100 | — |
| Mar Del Plata Fm Compacto 97.7 | — |
| Mar Del Plata Fm Up 88,5 | — |
| Media Baires S.a. | — |
| mediafem.com | — |
| Mega | — |
| Mega 98.9 - San Juan | — |
| Metro | — |
| Millenium | — |
| Miramar Fm 89.3 Radio Mitre | — |
| Miramar Fm 98.1 La100 | — |
| Mitre | — |