| Name | Meaning | Gender | Origin |
|---|
| Jasmine | Flower
| Female | Persian |
| Jazzy | Modern variant of Jasmine: combination of Jocelyn and the musical term jazz.
| Female | |
| Jessica | God's grace | Female | Hebrew |
| Jezabel | | Unisex | Hebrew |
| Jimbo | Supplanter, Representative | Unisex | Hebrew |
| Jing | Pure Epitomy | Unisex | Chinese |
| Jinx | Charm, Spell | Female | Latin |
| Josh | God Saves | Unisex | English |
| Josie | From Josephine - She shall add. | Female | English |
| Kiki | From Enriqueta - Pet | Female | |
| Kiki | From Enriqueta - Pet | Female | |
| Kinky | | Unisex | |
| Kiri | tree bark | Female | Maori |
| Kitkat | | Unisex | Hebrew |
| Klara | Clear, Bright | Unisex | Scandinavian |
| Kodiak | Large Alaskan brown bear. | Female | Russian |
| Lillie | Lily | Unisex | English |
| Lily | Lily
| Female | English |
| Lorelei | from the Rhine River | Female | |
| Lotus | freamlike, lotus flower | Female | Greek |
| LouLou | | Unisex | Hebrew |
| Lucy | light: illumination.
| Female | English |
| Lulu | Pet form of the names Louise or Louella.
| Female | English |
| Luna | moon | Female | Latin |
| Mabel | my fair maid; lovely | Female | English |