| Name | Meaning | Gender | Origin |
|---|
| Jaeger | Hunter | Unisex | German |
| Jager | Carter | Unisex | English |
| Jagger | a teamster | Male | English |
| Jago | A character in a Victorian book who battled against the odds | Male | Spanish |
| Jansen | Variant Of The Hebrew John Jehovah Has Been Gracious; Has Shown Favor. | Unisex | German |
| Jazz | The romantic music
| Male | Word |
| Jazzy | Modern variant of Jasmine: combination of Jocelyn and the musical term jazz.
| Female | |
| Jedi | Beloved By God | Unisex | Hebrew |
| Jerzy | farmer | Male | Polish |
| Judge | One who hears and decides Court cases. | Male | Word |
| Juju | | Unisex | Hebrew |
| Justus | Just | Male | Roman |
| Kalo | | Unisex | |
| Katana | Sword | Unisex | Japanese |
| Kelby | Dark: dark-haired.
| Male | English |
| Kirk | church | Male | Norse |
| Kiwi | | Unisex | Hebrew |
| Kizzy | From Roots | Female | English |
| Kodiak | Large Alaskan brown bear. | Female | Russian |
| Koy | | Unisex | Hebrew |
| Lalo | To Sing A Lullaby | Unisex | Latin |
| Leeloo | after the character in the movie The Fifth Element | Unisex | |
| Legacy | | Unisex | |
| Legend | A romanticised story from earlier times. One who achieves legendary fame. | Male | English |
| Lion | Lion | Unisex | English |