- Moorebeck Stellar -- Morbid Sin
- Morbidness -- Morey Hall
- Moreza -- Morgenstern
- Morgenstern, Tobias -- Morning River Band
- Morning Runner -- Morris On
- Morris On Band -- Morten Steen
- Morten Trust -- Moscow State Film Orchestra
- Moscow State Phil Harmonic Orchestra -- Moshic
- Moshic Shlomy -- Motel
- Motel -- Mother's Finest
- Mothers Little Helpers -- Motorbikes
- Motorbikes -- Mount Angel Seminary Choir
- Mount Athos Monks -- Mouss & Hakim
- Mouss Kara -- Moving Parts
- Moving Picture Show -- Mozzy Green
- Mozzymann -- Mr. Bambu
- Mr. Bananas -- Mr. Cenzo
- Mr. Chadwick -- Mr Dynisty
- Mr. E -- Mr. Greenweedz
- Mr. Greenweedz & G. Riot -- Mr King
- Mr. King Adam -- Mr Mayhim
- Mr. Mbaye -- Mr. One Travieso
- Mr Oneness -- Mr RJ
- Mr. RJ -- Mr. Spanky
- Mr. Spats -- Mr. Wilson