| Name | Meaning | Gender | Origin |
|---|
| Loretta | Pure
| Female | English |
| Lourdes | Reference to the Virgin Mary
| Female | Basque |
| Louredes | Reference to the Virgin Mary
| Female | |
| Lucena | Illumination. Mythological Roman goddess of childbirth and giver of first light to newborns. Also refers to Mary as Lady of the Light.
| Female | |
| Lucero | Spanish form of Luke light
| Male | |
| Lucia | Light | Female | Italian |
| Luciano | Form of Luke. Light: illumination.
| Male | Italian |
| Lucila | | Unisex | |
| Lucinda | light | Female | English |
| Lucio | Spanish form of Luke light
| Male | |
| Lucita | Little light
| Female | |
| Lucrecia | Brings light
| Female | |
| Luella | Famous elf
| Female | Spelling |
| Luis | Famous fighter
| Male | |
| Luisa | Spanish form of Louise famous in war
| Female | Italian |
| Luna | moon | Female | Latin |
| Luz | light | Female | Spanish |
| Madrid | | Female | |
| Manda | Harmony, Beloved | Female | Latin |
| Mandy | Harmony | Female | English |
| Mannie | G-D Is With Us | Unisex | Spanish |
| Manny | God Is With Us | Male | English |
| Manuel | God is with us | Male | Spanish |
| Marcelino | Little Star. Form of the Latin Marcellus meaning hammer.
| Male | |
| Marco | warlike | Male | Italian |