| Name | Meaning | Gender | Origin |
|---|
| Magnolia | Magnol's flower | Female | Latin |
| Magnum | A large type of wine bottle. | Unisex | English |
| Mahogany | American evergreen tree valued for its hard, red-brown wood | Female | English |
| Maisy | Pearl. Variant Of Margaret. | Unisex | English |
| Majestic | | Unisex | Hebrew |
| Mako | Child of truth | Unisex | Japanese |
| Mandy | She who must be loved | Female | Latin |
| Mango | After the character in Saturday Night Live | Unisex | English |
| Maria | Bitter | Female | Hebrew |
| Maricruz | Mary of the Cross | Female | Spanish |
| Marigold | Golden Mary | Female | English |
| Marilu | | Female | Hebrew |
| Marilyn | Uncertain, maybe bitter | Female | Hebrew |
| Marley | Pleasant wood | Female | English |
| Marlo | Drained lake | Female | English |
| Marta | Lady | Female | Aramaic |
| Marvel | Miracle | Unisex | English |
| Matilda | Powerful battler | Female | Germanic |
| Maude | Powerful battler | Female | German |
| Maxi | Pet form of names starting with Max | Unisex | English |
| Maximillion | | Unisex | Hebrew |
| Maxx | Greatest | Unisex | English |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Melia | Rival | Female | Latin |
| Melina | Honey | Female | Greek |
| Melody | Melody | Female | Greek |
| Mercedes | Mercies | Female | Spanish |
| Mia | Uncertain, maybe bitter | Female | Hebrew |
| Mickey | Who is like God? | Unisex | Hebrew |
| Midnight | Intense darkness, the middle of the night | Unisex | English |