| Name | Meaning | Gender | Origin |
|---|
| Jenga | | Unisex | Hebrew |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jerico | City of the moon. Variant of Hebrew Jericho.
| Male | |
| Jerold | Variant of Gerald Rules by the spear.
| Male | |
| Jerrold | Variant of Gerald Rules by the spear.
| Male | |
| Jewel | Jewel
| Female | Word |
| Jezebel | follower of idols | Female | Hebrew |
| Jitterbug | | Male | Hebrew |
| Joelle | Jehovah is God
| Female | |
| Joellen | Jehovah is God. Feminine of Joel.
| Female | |
| Johnn | Variant of the Hebrew John Jehovah has been gracious: has shown favor.
| Male | |
| Jojo | | Female | Hebrew |
| 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 |
| Jumanji | | Unisex | Hebrew |
| Jumjum | | Female | |
| Kalina | Flower
| Female | |
| Kam | Form of Cameron crooked nose.
| Male | |
| Kandy | Cutie
| Male | |
| Karma | Fate or destiny (Hinduism and Buddhism) | Female | Hindi |
| Katniss | | Female | |
| Katniss | | Female | |
| Kato | second of twins | Male | African |
| Keifer | Barrelmaker Variation of Cooper. Surname.
| Male | |
| Kenneth Towler | Had O.W.L. breakdown.
| Male | |