- M. Ward
- M.I.A.
- MDFMK
- MSTRKRFT
- Mad Capsule Markets
- Madeleine Peyroux
- Madvillian
- Mae
- Mainstay
- Majestic Twelve
- Malajube
- Mando Diao
- Maps
- Marc Broussard
- Mardo
- Maria Taylor
- Marion Raven
- Maritime
- Maroon 5
- Mason Proper
- Mastodon
- Mat Kearney
- Mates of State
- Matisyahu
- Matt Costa
- Matt Nathanson
- Matthew Dear
- Maximo Park
- Mayday Parade
- Maylene and the Sons of Disaster
- Medication
- Meg and Dia
- Megadeth
- Melee
- Meliah Rage
- Menomena
- Mercury Rev
- Merlinmoon
- Metal Church
- Metric
- Mezklah
- Michael Franti & Spearhead
- Midlake
- Midnight Movies
- Millencolin
- Mindless Self Indulgence
- Ministry
- Mink
- Minsk
- Minus Story
- Minus The Bear
- Misery Index
- Moby
- Modern Skirts
- Moh Azima
- Mondo Generator
- Monsieur Leroc
- Monster In The Machine
- Monster Magnet
- Monsters Are Waiting
- Moonspell
- Morbid Angel
- Morcheeba
- Morning 40 Federation
- Moros Eros
- Morrissey
- Most Precious Blood
- Moth
- Motion City Soundtrack
- Motley Crue
- Motograter
- Motor
- Motorhead
- Mountain Con
- Mudhoney
- Munkafust
- Murder By Death
- Murder City Sparrows
- Mushroomhead
- Mute Math
- MxPx
- My American Heart
- My Dying Bride
- My Epiphany
- Mystery Jets
- mewithoutYou
- mum
