| Madelaine | Woman | Latin Names |
| Madonna | Woman | Latin Names |
| Magdalene | Woman | Latin Names |
| Magna | Woman | Latin Names |
| Magnum | Man | Latin Names |
| Magnus | Man | Latin Names |
| Maia | Woman | Latin Names |
| Major | Man | Latin Names |
| Majora | Woman | Latin Names |
| Mandy | Woman | Latin Names |
| Marcella | Woman | Latin Names |
| Marcello | Man | Latin Names |
| Marcellus | Man | Latin Names |
| Marcena | Woman | Latin Names |
| Marcia | Woman | Latin Names |
| Marcus | Man | Latin Names |
| Marenda | Woman | Latin Names |
| Margaretta | Woman | Latin Names |
| Maria | Unisex | Latin Names |
| Marilla | Woman | Latin Names |