| Name | Meaning | Gender | Origin |
|---|
| Leo | Lion.
| Male | Latin |
| Lewis And Clark | | Male | Hebrew |
| Lillian | lily, a flower | Female | English |
| Lilly | Lily | Female | English |
| Lindeberg | From the linden tree hill
| Male | |
| Lionel | Cousin of Lancelot
| Male | Latin |
| Lobo | Wolf | Unisex | Italian |
| Lollipop | | Unisex | |
| Lore | Flower
| Female | |
| Lorenzo | Form of Lawrence. Lorenzo de' Medici was a patron of Michaelangelo and Da Vinci.
| Male | Italian |
| Loretta | Pure
| Female | English |
| Lothario | | Male | |
| Lotti | | Female | |
| Luca | man from Lucania | Male | Italian |
| Luciana | light | Female | Italian |
| Lucio | Spanish form of Luke light
| Male | |
| Ludo Bagman | Wrongly accused of being a Death Eater.
| Male | |
| Luigi | Famous fighter
| Male | Italian |
| Luisa | Spanish form of Louise famous in war
| Female | Italian |
| Luke | Light | Male | Greek |
| Luna Lovegood | Ravenclaw student.
| Female | |
| Lupin | | Male | Hebrew |
| Lyubov | Love. Alternate Spellings: Lyuba or Luba.
| Female | |
| Maggie | Abbreviation of Margaret. A pearl.
| Female | English |
| Maiti | Strong battle maiden
| Female | |