| The Mayan Factor |
| The Maybe |
| The Maydream |
| The Mayfair Kid |
| The Mayfield Four |
| The Mayflies USA |
| The Mayfly Scheme |
| The Mayhaps |
| The MayKing |
| The Maynard Brothers Band |
| The Maynard Ferguson Big Band |
| The Mayors |
| The Mayos |
| The Maytals |
| The MB |
| The MC |
| The McAuley Boys |
| The McCalmans |
| The McClain Sisters |
| The McClures |
| The Mcclurg Family Singers |
| The McClymonts |
| The McCormick Brothers |
| The McCoy Tyner Trio |
| The McCoys |
| The McCues |
| The McDowell Family |
| The McGregor Project |
| The McGuire Sisters |
| The McKnight Family Choir |
| The McPeak Brothers |
| The McRyatts |
| The MCs |
| The McSharry Sisters |
| The MD X-Spress |
| The MDH Band |
| THE MDNSE |
| The Mean Season |
| The Meantime |
| The Meantraitors |
| The Meanwhile |
| The Mears Brothers |
| The Meas |
| The Measure |
| The Meat |
| The Meat Purveyors |
| The Meatmen |
| The Mecca |
| The Medea Project |
| The Mediaeval Baebes |
| The Mediam |
| The Mediator |
| The Medic |
| The Medic Droid |
| The Medicated and Scared |
| The Medicates |
| The Medicine Dolls |
| The Medicine Hat Conspiracy |
| The Meditations |
| The Medium |
| The Medium Blue |
| The Medlars |
| The Medley |
| The Meemies |
| The Meese |
| The Meeting Tent |
| The Meffs |
| The Mega |
| The Mega Kids |
| The Megaspook |
| The Megatones |
| The Megdans |
| THE Mehrab |
| The Meinflow |
| The Mekons |
| The Mel Cooleys |
| The Mel-Tones |
| The Melancholic Folk Collective |
| The Melancholicz |
| The Melancholy Astronomer |
| The Melankoly |
| The Melismatics |
| The Melissa June Band |
| The Mello Men |
| The Mello-Kings |
| The Mello-Larks |
| The Mello-Moods |
| The Mellomen |
| The Mellonheads |
| The Mellow Men |
| The Mellow Myth |
| The Mellowmen |
| The Mellows |
| The Melmacs |
| The Melodians |
| The Melodico |
| The Melodico, Fanny Js |
| The Melodiks |
| The Melodream |
| The Melody |
