| Name | Meaning | Gender | Origin |
|---|
| Jacqueline | Feminine form of Jacques
| Female | |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jefferson | son of Jeffrey | Male | English |
| Jeremiah | Exalted of the Lord
| Male | Hebrew |
| Jerome | sacred name | Male | Greek |
| Joel | God is willing, Jehova is the Lord | Male | Hebrew |
| John | God is merciful | Male | Hebrew |
| Joseph | God will increase | Male | Hebrew |
| Josephine | God will increase | Female | |
| 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 |
| Juliette | youthful | Female | |
| 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 |
| Kennedy | misshapen head | Female | Irish |
| Lara | citadel | Female | Russian |
| Laura | bay laurel | Female | Latin |
| Lauren | bay laurel | Female | English |
| Leonard | lion-hearted | Male | |
| Leonardo | Lion-bold. Leonardo da Vinci is considered by many to be the most brilliant and creative men who ever lived.
| Male | Italian |