| 584. Maria Reis | Background Vocals, Keys | 1 |
| 584. Maria Taylor | Featured Artist | 1 |
| 584. Maria Telesheva | Accordion | 1 |
| 584. Maria Volonte | Featured Artist | 1 |
| 584. Mariachi El Bronx | Featured Artist | 1 |
| 584. Mariachi Flor De Toloache | Featured Artist | 1 |
| 584. Mariah Meshae | Background Vocals | 1 |
| 584. Marian Li-Pino | Drums | 1 |
| 584. Marian McLaughlin NPR | Featured Artist | 1 |
| 584. Marianne Khattar | Vocals | 1 |
| 584. Marie Bérard | Violin | 1 |
| 584. Marie Ulven | Guitar, Vocals | 1 |
| 584. Mariella Price | Vocals | 1 |
| 584. Marika Clark | Vocals | 1 |
| 584. Marilena Umuhoza Delli | Spokesperson, Translator | 1 |
| 584. Marina Albero | Keys, Soundscape | 1 |
| 584. Marina Arrufat | Strings | 1 |
| 584. Marina Carmona | Vocals | 1 |
| 584. Mario Callender | Keys | 1 |
| 584. Mario Castro | Keyboards, Tenor Sax | 1 |
| 584. Mario Gabriel Mesa Meriño "Machete" | Percussion | 1 |
| 584. Mariola Orellana | Vocals | 1 |
| 584. Marisa Anderson | Featured Artist | 1 |
| 584. Marit Schmidt | Viola, Vocals | 1 |
| 584. Mariza Scotch | Vocals | 1 |