| Name | Meaning | Gender | Origin |
|---|
| Mercy | Compassion | Female | English |
| Michi | Route | Female | Japanese |
| Michiko | Beautiful wise child | Female | Japanese |
| Mickey | Who is like God? | Unisex | Hebrew |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Midori | Green | Female | Japanese |
| Mieko | Child blessed with beauty | Female | Japanese |
| Mighty | | Unisex | Hebrew |
| Mignon | Cute | Female | French |
| Mika | Beautiful smell | Female | Japanese |
| Miki | Beautiful story | Female | Japanese |
| Minako | Child of the beautiful Nara | Female | Japanese |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Mitsu | Bear | Unisex | Native American |
| Mitsuko | Child of the light | Female | Japanese |
| Miu | Beautiful feathers | Unisex | Japanese |
| Miyoko | Beautiful generation child | Female | Japanese |
| Miyuki | Silent snow | Unisex | Japanese |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Momoko | Peach child | Female | Japanese |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Mozart | | Unisex | Hebrew |
| Mystic | | Unisex | Hebrew |
| Nadia | Hope | Female | Russian |
| Nana | Grace | Unisex | Hebrew |
| Naoko | Obedient child | Female | Japanese |
| Naomi | Beautiful, pleasant, delightful | Female | Hebrew |
| Natalie | Christ's birthday | Female | Italian |
| Natsu | Summer | Unisex | Japanese |