| Name | Meaning | Gender | Origin |
|---|
| Jack | From John - God's gracious gift | Male | English |
| Jackal | | Unisex | Hebrew |
| Jackie | supplanter | Female | English |
| Jade | Jewel. Courageous and adoring.
| Female | Spanish |
| Jagger | a teamster | Male | English |
| Jamie | Feminine of James | Female | Scottish |
| Jasmine | Flower
| Female | Persian |
| Jazmine | Jasmine | Unisex | English |
| Jennifer | white shadow, white wave | Female | Cornish |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jessica | God's grace | Female | Hebrew |
| Jett | Jet Black Gem | Male | English |
| Joey | Abbreviation of Joseph.
| Male | |
| Joey | Abbreviation of Joseph.
| Male | |
| Johnny | the Lord is gracious | Male | English |
| Jordan | The descending river, to flow | Male | Hebrew |
| Julia | Youthful
| Female | Latin |
| Juliet | youthful | Female | English |
| Kat | pure | Female | English |
| Kate | Pure | Female | English |
| Kaycee | Vigilant, Watchful | Unisex | English |
| Kevin | handsome | Male | Irish |
| Kimberly | Cyneburga's Royal Forest, Meadow | Female | English |
| Lee | Healer
| Male | English |