| Name | Meaning | Gender | Origin |
|---|
| Liberty | Free
| Female | Word |
| Lillian | lily, a flower | Female | English |
| Lily | Lily
| Female | English |
| Lloyd | gray | Male | Welsh |
| Logan | little hollow | Male | Scottish |
| Loretta | Pure
| Female | English |
| Lorraine | From Lorraine
| Female | |
| Lowell | Beloved | Male | |
| Lucy | light: illumination.
| Female | English |
| Luther | Renowned warrior.
| Male | |
| Lyle | island | Male | Scottish |
| Mack | Son of
| Male | Scottish |
| Maddox | Beneficient | Male | Welsh |
| Madeline | woman from Magdala, one who is elevated, a high tower | Female | English |
| Mae | bitter | Female | English |
| Maia | nurse, mother, goddess of spring; great | Female | Greek |
| Maisie | child of light | Female | Scottish |
| Mark | warlike | Male | Latin |
| Marshall | Man who looks after a nobleman's estate, keeper of the horses; steward | Male | |
| Mary | bitter | Female | Hebrew |
| Mason | Worker in stone. | Male | English |
| Matthew | Gift of the Lord | Male | Hebrew |
| Maude | battle-mighty | Female | English |
| Maverick | One that dissents from the group. | Male | American |
| Max | Large spring | Male | English |