- The Mopeds -- The Morning Benders
- The Morning Birds -- The Morris-Neal District Choir
- The Morris Quinlan Experience -- The Moss Brothers
- The Moss Brothers -- The Mother Truckers
- The Motherf*ckers -- The Motor City Horns
- The Motor City Sound Machine -- The Mountain Park Old Time Band
- The Mountain People -- The Moves
- The Moves -- The Mozart Effect
- The Mozartean Players -- The Mudcakes
- The Mudcats -- The Mulberry Purple
- The Mulcahy Family -- The Mumps
- The Mu:n -- The Murders
- The Murmaids -- The Murmurs of Tension