| The Lyndsay Diaries |
| The Lynne Arriale Trio |
| The Lyttle Sisters |
| The M Machine |
| The M Squad |
| The Mac |
| The Mac Band Featuring the McCampbell Brothers |
| The Macarena Men |
| The Macc Lads |
| The Maccabees |
| The MacDonald Bros. |
| The Machine |
| The Machine for Making Sense |
| The Mackenzie |
| The Mad Hatters |
| The Mad Lads |
| the Mad Stuntman |
| The Madd |
| The Madd Rapper |
| The Madden Brothers |
| The Maddox Brothers |
| The Maddox Brothers & Rose |
| The Madness |
| The Mae Shi |
| The Magic |
| The Magic Band |
| The Magic City Jazz Band |
| The Magic Gang |
| The magic numbers |
| The Magic Time Travelers |
| The magical flying thunderbirds |
| The Magical Kingdom |
| The Magical Singers |
| The Magician |
| The Magick Brothers |
| The Magnetic Fields |
| The Magnetic Zeros |
| The Magnets |
| The Magnificent |
| The Magnificent 7 |
| The Magnificent Mercury Brothers |
| The Magnificent Seven |
| The Magnificent Sevenths |
| The Magnificent VII |
| The Magokoro Brothers |
| The Mahones |
| The Main Ingredient |
| The Maine |
| The Mainstreeters |
| The Majestic Twelve |
| The Majors |
| The Makaha Sons |
| The Make-Up |
| The Malibus |
| The Maloy Brothers |
| The Mamas & Papas |
| The Mamas & the Papas |
| The Mamas & The Papas |
| The Mammals |
| The Management |
| The Manatees |
| The Mancini Pops Orchestra |
| The Manfreds |
| The Manhattan Skyline Quartet |
| The Manhattan Transfer |
| The Manhattans |
| The Manny Jazz All-Stars |
| The Mantini Sisters |
| The Manvils |
| The Mao Band |
| The Maple Blues Revue |
| The Maple Room |
| The Mar-Keys |
| The Maranatha! Kids |
| The Maranatha! Singers |
| The Marathons |
| The Marbles |
| The Marc Atkinson Trio |
| The Marcarlo Brothers |
| The Marcels |
