| Name | Meaning | Gender | Origin |
|---|
| Hurricane | A severe tropical cyclone. | Female | Spanish |
| Ice | Water frozen solid | Unisex | |
| Inez | pure, virginal | Female | Portuguese |
| Ivan | Form of John | Male | Russian |
| Ivana | God is gracious | Female | Feminine |
| Jabba | | Unisex | Hebrew |
| Jake | From Jacob - To fill the place of another | Male | Hebrew |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Java | Brewed coffee | Female | Anglicization |
| Jericho | Place In Israel | Male | Hebrew |
| Jethro | excellence | Male | Hebrew |
| Jewel | Jewel
| Female | Word |
| Jinx | Charm, Spell | Female | Latin |
| Jumbo | Unusually large person, animal or thing e.g. Jumbo Jet. From African 'jumba' meaning elephant. | Male | |
| Jupiter | Zeus, Father | Male | Roman |
| Justice | Just, Fairness | Female | English |
| Kahuna | | Unisex | |
| Kali | after the Indian goddess of death | Female | Sanskrit |
| Kelly | Lively: aggressive.
| Female | Irish |
| Khan | An Indian ruler or official | Unisex | |
| Killer | | Unisex | |
| King | King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Koda | | Male | |