| The Mighty Tubadours |
| The Mighty Wah! |
| The Migil 5 |
| The Mike Curb Congregation |
| The Mike Eldred Trio |
| The Mike Flowers Pops |
| The Mike Hennessey Chastet |
| The Mike Owen Woodland Jazz Band |
| The Mike Sammes Singers |
| The Mildred Snitzer Orchestra |
| The Mildred Snitzer Orchestra |
| The Milennium Jazz Orchestra |
| The Miles |
| The Milestones & Littler Leroy |
| The Military Orchestra of the Soviet Army |
| The Milk Carton Kids |
| The Milkshakes |
| The Millar Brass Ensemble |
| The Millennium |
| The Millennium Dance Party All-Stars |
| The Miller Orchestra |
| The Miller Sisters |
| The Million Dollar Bashers |
| The Million Dollar Quartet |
| The Millionaires |
| The Mills |
| The Mills Brothers |
| The Milton Raskin String Choir |
| The Mindbenders |
| The Minions |
| The Minister of Soundalikes |
| The Minstrel Singers |
| The Mint |
| The Mint Chicks |
| The Mint Juleps |
| The Minus 5 |
| The Miracle |
| The Miracles |
| The Mischievous Moon Chamber Players |
| The Misfit Toys |
| The Misguided |
| The Missiles of October |
| The Missing Links |
| The Mission |
| The Mission District |
| The Mission UK |
| The Mississippi Children's Choir |
| The Mississippi Mass Choir |
| The Missourians |
| The Mistletoe Organ & Chimes |
| The Misunderstood |
| The Mitch Hansen Band |
| The Mitchell Brothers |
| The Mitchell Trio |
| The Mitchell-Ruff Duo |
| The Mitchell-Ruff Trio |
| The Mitchells |
| The Mix |
| The Mixologists |
| The Mixtures |
| The Mizell Brothers |
| The Mo |
| The Moaners |
| The Mob |
| The Mob Group |
| The Mock Turtles |
| The Modern Jazz Quartet |
| The Modern Lovers |
| The Modernaires |
| The Modernist |
| The Mods |
| The Moffats |
| The Moffatts |
| The Mohawks |
| The Mojo Men |
| The Moldy Peaches |
| The Mom and Dads |
| The Moments |
| The Mommyheads |
| The Mondellos |
