| Name | Meaning | Gender | Origin |
|---|
| Jewel | Jewel
| Female | Word |
| John | God is merciful | Male | Hebrew |
| Josephine | God will increase | Female | |
| Juji | after Juji Garame, the name of a throw in the Aikido martial art | Unisex | |
| Juliet | youthful | Female | English |
| Kalila | beloved | Female | Arabic |
| Kalina | Flower
| Female | |
| Kat | pure | Female | English |
| Katniss | | Female | |
| Katniss | | Female | |
| Kingston | From the king's village or estate King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kit | Nickname for Christopher. Frontiersman Kit Carson.
| Male | English |
| Lace | From Lassy, Normandy | Unisex | English |
| Lacey | Cheerful One | Female | English |
| Lancelot | Knight of Arthur and lover of Guinevere
| Male | |
| Lily | Lily
| Female | English |
| Lorenzo | Form of Lawrence. Lorenzo de' Medici was a patron of Michaelangelo and Da Vinci.
| Male | Italian |
| Loretta | Pure
| Female | English |
| Love | loved one | Female | Word |
| Lovely | | Unisex | Hebrew |
| Mabel | my fair maid; lovely | Female | English |
| Madeline | woman from Magdala, one who is elevated, a high tower | Female | English |
| Mary | bitter | Female | Hebrew |
| Miel | | Unisex | |
| Mila | Dear One | Female | Russian |