| Name | Meaning | Gender | Origin |
|---|
| Jenna | white shadow, white wave | Female | English |
| Jennifer | white shadow, white wave | Female | Cornish |
| Jeremy | God will uplift, appointed by God | Male | English |
| Jesse | wealthy | Male | Hebrew |
| Jessica | God's grace | Female | Hebrew |
| Jimmy | supplanter | Male | English |
| Joey | Abbreviation of Joseph.
| Male | |
| Joey | Abbreviation of Joseph.
| Male | |
| John | God is merciful | Male | Hebrew |
| Jonathan | God gives | Male | Hebrew |
| Jordan | The descending river, to flow | Male | Hebrew |
| Joseph | God will increase | Male | Hebrew |
| Josh | God Saves | Unisex | English |
| Joshua | God is salvation
| Male | Hebrew |
| Jules | youthful; soft, downy | Male | |
| Julia | Youthful
| Female | Latin |
| Julian | Jove's child. Form of Julius and family clan name of several powerful Roman emperors. Biblical Roman centurion Julius saved Paul's life during a hazardous voyage
| Male | English |
| Julie | Youthful: Jove's child. A feminine of Julian.
| Female | |
| Juliette | youthful | Female | |
| Justin | just, true | Male | Latin |
| Justine | just, true | Female | |
| Kate | Pure | Female | English |
| Katherine | Pure. Used since third century A.D. Early Latin forms Katerina and Caterina became Katharine and Catherine. French Cateline and English Catlyn came into wider use during medieval period when variants multiplied.
| Female | Greek |
| Katie | Variant of Katherine. Pure.
| Female | English |
| Kayla | crown of laurels | Female | Arabic |