- The Memphis Pilgrims -- The Men's Choir of Sartène
- The Mental Midgets -- The Mercury Four
- The Mercury League -- The Merry Carol Singers
- The Merry-Go-Round -- The Messenger
- The Messengers -- The Methodaires
- The Methods -- The M.G.C.
- The MG's -- The Michael Tracy Quartet
- The Michael Treni Big Band -- The Midas Touch
- The Middle Distances -- The Midnight Renewal
- The Midnight Shakes -- The Mighty Dog Catchers
- The Mighty Dogcatchers -- The Mighty Mic Masters
- The Mighty Mighty Bosstones -- The Mighty Sparrow
- The Mighty Stars -- The Mighty Suburbans