- M2M
- Macy Gray
- Madison Avenue
- Madonna
- Mandy Moore
- Manic Street Preachers
- Marc Anthony
- Mariah Carey
- Marilyn Manson
- Mario
- Maris Amonte
- Mark Owen
- Maroon 5
- Marques Houston
- Martha Wainwright
- Martina McBride
- Martin McCutcheon
- Mary J. Blige
- Mary Mary
- Mason Jennings
- Massive Attack
- Master P
- Matchbox Twenty
- Matthew Good
- Matthew Good Band
- Mavericks
- Maxwell
- Meatloaf
- Meja
- Melanie B
- Melanie C
- Melissa Etheridge
- Memphis Bleek
- Mercy Me
- Meredith Brooks
- Mest
- Method Man
- Metro Station
- Michael Jackson

- M.I.A.
- Michelle Branch
- Mick Jagger
- Mikaila
- Mike Oldfield
- Miley Cyrus
- Millen Colin
- Mims
- Mindless Self Indulgence
- Miranda Lambert
- Misfits
- Missy Elliot
- Misteeq
- MLTR
- Mobb Deep
- Moby
- Modest Mouse
- Modjo
- Moist
- Monica
- Montell Jordan
- Montgomery Gentry
- Moody Blues
- Mr. Big
- Mr. Cheeks
- Ms. Dynamite
- Ms. Jade
- Mudvayne
- Murder Dolls
- Murphy Lee
- Muse
- Mushroomhead
- Musiq Soulchild
- Mute Math
- MXPX
- Mya
- Myra
- Mystikal
- MyTown