| Name | Meaning | Gender | Origin |
|---|
| Inca | | Unisex | Hebrew |
| Jabba | | Unisex | Hebrew |
| Java | Brewed coffee | Unisex | English |
| Jaws | Bones that form the mouth. A dangerous situation - "The Jaws of Death" | Unisex | English |
| Jazz | The romantic music | Unisex | English |
| Jezebel | Chaste, unmarried | Female | Hebrew |
| Jingles | | Unisex | Hebrew |
| Jupiter | Father god | Unisex | Latin |
| Karma | Action | Female | Sanskrit |
| Katie | Pure | Female | Greek |
| Kimberley | Variable prefix + forest clearing | Unisex | English |
| Lexy | Defending men | Unisex | Greek |
| Lily | Lily | Female | English |
| Lois | Battle Maiden | Female | Greek |
| Lola | Sorrows | Female | Spanish |
| Lottie | Free man | Female | German |
| Lucy | Light | Female | Latin |
| Luna | Moon | Female | Latin |
| Lydia | Noble kind | Female | Germanic |
| Lyric | Lyric | Unisex | English |
| Maddy | Pet form of Mad- names | Female | English |
| Maggie | Pearl | Female | Greek |
| Magic | Possessing qualities that produce baffling effects | Unisex | English |
| Magnum | A large type of wine bottle. | Unisex | English |
| Malu | Protection, shelter | Female | Hawaiian |
| Mara | Bitter | Female | Hebrew |
| Marley | Pleasant wood | Female | English |
| Maxi | Pet form of names starting with Max | Unisex | English |
| Maxie | Pet form of names starting with Max | Unisex | English |
| Melody | Melody | Female | Greek |