- Mabelle
- Macee
- Macey
- Macy
- Madalene
- Maddie
- Maddy
- Madeleina
- Madeleine
- Madelina
- Madeline
- Madelon
- Madie
- Madolen
- Mae
- Maelee
- Maelynn
- Magnolia
- Mai
- Maia
- Maine
- Maiolaine
- Maiya
- Majori
- Mallory
- Manette
- Manon
- Marcella
- Marcelle
- Marcellia
- Marchelle
- Maree
- Margaux
- Margeaux
- Margery
- Margo
- Margot
- Marguerite
- Maria
- Mariah
- Marian
- Mariane
- Marianne
- Marie
- Mariele
- Marielle
- Marietta
- Mariette
- Marion
- Marjolaina
- Marquisa
- Marquise
- Marquisha
- Marteena
- Marveille
- Marvel
- Marvella
- Marvelle
- Maryl
- Mathilda
- Mathilde
- Matilda
- Matilde
- Mattie
- Matty
- Maud
- Maude
- Maura
- Maura
- Maureen
- Maurelle
- Maurina
- Maurine
- Mavis
- Mavise
- Melaina
- Melaine
- Melanee
- Melanie
- Melisande
- Melodie
- Melusina
- Mercer
- Merci
- Mercy
- Merla
- Merle
- Merlyn
- Merryl
- Meryl
- Michel
- Michela
- Michele
- Michella
- Michelle
- Mignon
- Mignonette
- Millicent
- Millicente
- Millie
- Mimi
- Minetta
- Minette
- Minna
- Minnie
- Mirabella
- Mirabelle
- Mireille
- Mirla
- Mistique
- Moniqua
- Monique
- Montague
- Moreen
- Musetta
- Musette
- Mychele
- Mychelle
- Myrla
- Mystique