| Mordechai Ben David | United States | Aramaic (Syriac Classical) English Hebrew Yiddish +2 |
| Mickael Carreira | Portugal | English Portuguese Spanish |
| Manel | Spain | Catalan |
| Michele Morrone | Italy | English |
| Maria Tănase | Romania | French Romanian |
| Mafia K'1 Fry | France | French |
| Matisyahu | United States | English Hebrew |
| MHD | France | English French |
| Main Prem Ki Diwani Hoon (OST) [2003] | India | Hindi |
| Mango (Italy) | Italy | English Italian Neapolitan Spanish +2 |
| Macaco | Spain | Catalan English Portuguese Spanish +2 |
| Massiv | Germany | German |
| Mike Oldfield | United Kingdom | Constructed Language English Gaelic (Irish Gaelic) German Hindi Latin Unknown +5 |
| Mr. Saik | Dominican Republic | Spanish |
| Miami Band | Kuwait | Arabic Persian |
| Makis Christodoulopoulos | Greece | Greek |
| Man with a Mission | Japan | English Japanese |
| Mikail Aslan | Turkey | Kurdish (Kurmanji) Turkish Zazaki |
| Miligram | Serbia | Croatian Serbian |
| Misha Marvin | Ukraine | Russian |
| Mägo de Oz | Spain | English German Spanish |
| Magazin | Croatia | Croatian Croatian (Chakavian dialect) English German Italian Romani +4 |
| Mimoza Shkodra | Kosovo | Albanian |
| Morrissey | United Kingdom | English |
| Mulan (OST) | United States | Arabic (Egyptian) Armenian Bulgarian Catalan Chinese Chinese (Cantonese) Crimean Tatar Czech Danish Dutch Dutch (Dialects) English Filipino/Tagalog Finnish French Georgian German Greek Hebrew Hindi Hungarian Icelandic Indonesian Italian Japanese Kazakh Korean Malay Norwegian Polish Portuguese Romanian Russian Slovak Spanish Swedish Thai Turkish Ukrainian +37 |
| Mišo Kovač | Croatia | Croatian Croatian (Chakavian dialect) |
| Meiko Kaji | Japan | Japanese |
| Mario Lanza | United States | English Italian Latin Neapolitan Spanish +3 |
| Malina | Bulgaria | Bulgarian |
| Miyuki Nakajima | Japan | Japanese |
| Mads Langer | Denmark | Danish English |
| Myahri | Turkmenistan | Russian Turkmen |
| Maria Bethânia | Brazil | French Portuguese |
| Magic System | Cote d'Ivoire | Dyula English French |
| Marc Lavoine | France | English French Spanish |
| Mika Mendes | Cape Verde | Cape Verdean English Portuguese |
| Maria Nazionale | Italy | Italian Neapolitan |
| Mónica Naranjo | Spain | Catalan English French German Italian Spanish +4 |
| Melina Mercouri | Greece | French German Greek |
| Molly Sandén | Sweden | English Swedish |
| Mano Negra | France | Arabic English French Spanish +2 |
| Mötley Crüe | United States | English |
| Marinella | Greece | Greek Greek (Cypriot) |
| Mohammad Esfahani | Iran | Arabic Persian |
| Maria Farantouri | Greece | Greek Griko Spanish Turkish +2 |
| Milva | Italy | English French German Greek Italian Japanese Neapolitan Spanish +6 |
| MALICE MIZER | Japan | English French Japanese |
| Maria Callas | Greece United States | French Italian Latin |
| Mehteran Birliği | Turkey | Turkish Turkish (Ottoman) |
| Manto (Greece) | Greece | English Greek Italian Turkish +2 |