| Name | Meaning | Gender | Origin |
|---|
| Isis | throne | Female | Egyptian |
| Izabelle | Beautiful
| Female | |
| Jacquelin | French form of Jacob
| Male | |
| Jalita | | Female | |
| Javan | Son of Japtheth
| Male | Hebrew |
| Jazz | The romantic music
| Male | Word |
| Jedda | | Male | Hebrew |
| Jeraldo | Variant of Gerald Rules by the spear.
| Male | |
| Jerrald | Variant of Gerald Rules by the spear.
| Male | |
| Jethro | excellence | Male | Hebrew |
| Jewel | Jewel
| Female | Word |
| Jitterbug | | Male | Hebrew |
| Johnn | Variant of the Hebrew John Jehovah has been gracious: has shown favor.
| Male | |
| Jolie | French for pretty | Female | |
| Joplin | the afflicted | Male | English |
| Joshua | God is salvation
| Male | Hebrew |
| Junior | Youthful person. Used to distinguish son from father where they have the same name | Male | Latin |
| Jupiter | Zeus, Father | Male | Roman |
| Kadaffi | | Male | Hebrew |
| Kanga | | Male | Hebrew |
| Kashmire | | Male | Hebrew |
| Katmandu | | Male | Hebrew |
| Keegan | A thinker: fiery. Form of Hugh.
| Male | Irish |
| Keg | | Male | Hebrew |
| Kelvin | name of a river; from the narrow river | Male | Scottish |