| Name | Meaning | Gender | Origin |
|---|
| Mercer | Vendor of sewing materials | Male | French |
| Merle | Contracted form of Meriel | Female | English |
| Merlin | Sea fort | Male | Welsh |
| Mignon | Cute | Female | French |
| Mimi | Uncertain, maybe bitter | Female | Hebrew |
| Mina | Will, desire + helmet, protection | Female | Germanic |
| Mini | Something smaller than others of its type | Unisex | English |
| Mirabel | Lovely | Female | Latin |
| Mirabelle | Lovely | Female | Latin |
| Mirella | Uncertain, possibly admire | Female | French |
| Mirielle | Uncertain, possibly admire | Female | Latin |
| Missy | Bee | Female | Greek |
| Moko | | Unisex | Hebrew |
| Mollie | Uncertain, maybe bitter | Female | Hebrew |
| Momo | Gangster from the movie Get Shorty | Female | English |
| Mona | Little noble one | Female | Gaelic |
| Monet | Solitary | Unisex | French |
| Montague | Pointed hill | Female | French |
| Monte | Gomeric's hill | Male | French |
| Montel | Little mountain | Male | French |
| Montgomery | Gomeric's hill | Male | French |
| Monty | Gomeric's hill | Male | French |
| Morris | Moor | Male | Latin |
| Mortimer | Dead sea | Male | French |
| Morty | Dead sea | Male | French |
| Mozart | | Unisex | Hebrew |
| Musetta | Small bagpipe | Female | French |
| Mya | Uncertain, perhaps mother or great one | Female | Greek |
| Nadine | Hope | Female | Russian |
| Nakia | Unconquered, unconquerable | Female | Greek |