| Name | Meaning | Gender | Origin |
|---|
| Jagger | a teamster | Male | English |
| Jazz | The romantic music
| Male | Word |
| Jazzy | Modern variant of Jasmine: combination of Jocelyn and the musical term jazz.
| Female | |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jerry | after Jerry Garcia, The Grateful Dead | Male | English |
| Jerry Lee | after Jerry Lee Lewis | Unisex | |
| Jesse | wealthy | Male | Hebrew |
| Jethro | excellence | Male | Hebrew |
| Jett | Jet Black Gem | Male | English |
| John | God is merciful | Male | Hebrew |
| Joplin | the afflicted | Male | English |
| Jovi | after Jon Bon Jovi | Unisex | |
| Julio | Latin, youthful, downy-bearded | Male | Spanish |
| Justin | just, true | Male | Latin |
| Kanye | after the rap artist Kanye West | Male | African |
| Katie | Variant of Katherine. Pure.
| Female | English |
| Katy | pure | Female | Short |
| Katy | pure | Female | Short |
| Kena | | Unisex | |
| Kiki | From Enriqueta - Pet | Female | |
| Kiki | From Enriqueta - Pet | Female | |
| King | King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kiri | tree bark | Female | Maori |
| Kokomo | | Unisex | Hebrew |