| 544. Marian Li-Pino | Drums | 1 |
| 544. Marian McLaughlin NPR | Featured Artist | 1 |
| 544. Marianne Khattar | Vocals | 1 |
| 544. Marie Bérard | Violin | 1 |
| 544. Marie Ulven | Guitar, Vocals | 1 |
| 544. Mariella Price | Vocals | 1 |
| 544. Marika Clark | Vocals | 1 |
| 544. Marilena Umuhoza Delli | Spokesperson, Translator | 1 |
| 544. Marina Albero | Keys, Soundscape | 1 |
| 544. Marina Arrufat | Strings | 1 |
| 544. Marina Carmona | Vocals | 1 |
| 544. Mario Castro | Keyboards, Tenor Sax | 1 |
| 544. Mario Gabriel Mesa Meriño "Machete" | Percussion | 1 |
| 544. Mariola Orellana | Vocals | 1 |
| 544. Marisa Anderson | Featured Artist | 1 |
| 544. Marit Schmidt | Viola, Vocals | 1 |
| 544. Mariza Scotch | Vocals | 1 |
| 544. Mark "Bobo" Bowen | Guitars | 1 |
| 544. Mark "Speedy" Gonzales | Trombone | 1 |
| 544. Mark Adams (keyboards) | Musician | 1 |
| 544. Mark Colenburg | Drums | 1 |
| 544. Mark Dover | Clarinets | 1 |
| 544. Mark Guiliana | Drums | 1 |
| 544. Mark Hosler | Musician | 1 |
| 544. Mark James | Keyboards | 1 |