- Matt Welch
- Matt Wise
- Matthew Ballard
- Matthew Daynard
- Matthew Rich
- Matthew Rich, Jr.
- Matthew Rich Jr.
- Matthew Show
- Matthew Wojcik
- Matthews, Wright & King
- Mattias Gustafsson & George Teren & JP Pennington
- Mattie, Martha & Minnie
- Matty Charles
- Matty Charles and the Valentines
- Matuto
- Maura O'Connell
- Maureen Carr
- Maureena Danicar
- maurice mertoli
- Maury Finney
- Maverick Country
- Mavis Piggott
- Max and the Wild Things
- Max D. Barnes
- Max Hay
- Max Hay
- Max Hill
- Max Johns
- Max Stalling
- Max & Sue Hill
- maxandersonable
- Maximillion Cletus Booteah
- Maxine Brown
- Maxwell Street Jimmy Davis
- Mayf Nutter
- Mc Chocolate
- MC Potts
- McAdoo Perkins
- McAlyster
- McBride & The Ride
- McCamy's Melody Sheiks
- McCarthy / Buescher
- McClung Brothers & Cleve Chaffin
- McCoy Brothers
- McCravy Brothers