- Mardi Milligan
- Maree McRae
- Maren Morris
- Margaret Durante
- Margaret Emerson
- Marge Calhoun
- Margherita Dalla Vecchia
- Margie Bowes
- Margie Cumbie
- Margie Singleton
- Margo Smith
- Mari Stuart
- Maria Almlöv
- Maria Jeminez
- Maria Longoria
- Maria & the Urban Amigos
- Maricopa Madman
- Marie Alyce Devieux
- Marie Bellet
- Marie Miller
- Marie Norway
- Marie Osmond
- Marie Sisters
- Mariella Squire-Hakey
- Marijohn & The Jacks
- Marijohn Wilkin
- Marilena Mirra
- Marilisa
- Marilyn Nelson
- Marilyn Sellars
- Marilyn Smith
- Marilyn Tuttle
- Mario Flores
- Mario Guggia
- Mario Martin
- Mario P. Fiore Sr.
- Mario Parras
- Mario Sixstring
- Mario Tramaine
- Marion Peterson
- Marion Rutledge
- Marion Sumner
- Marion Worth
- Marion Z. "Pee Wee" Adams