| Name | Meaning | Gender | Origin |
|---|
| India | Of India | Female | English |
| Indiana | Indiana, Usa, Meaning Land Of The Indians | Male | English |
| Iona | flower name, purple jewel | Female | Scottish |
| Jaffa | beautiful | Female | Hebrew |
| Java | Brewed coffee | Female | Anglicization |
| Jersey | From A Section Of England | Male | English |
| Job | The Persecuted | Male | Hebrew |
| Johnson | Son of John
| Male | English |
| Jordan | The descending river, to flow | Male | Hebrew |
| Juno | queen of the heavens | Female | Latin |
| Kelby | Dark: dark-haired.
| Male | English |
| Keno | | Unisex | Hebrew |
| Kenya | Animal Horn | Female | Hebrew |
| Kermit | free man | Male | Irish |
| Kerry | dark, dark-haired | Male | Irish |
| Kickapoo | | Unisex | Hebrew |
| Kimberly | Cyneburga's Royal Forest, Meadow | Female | English |
| Kingston | From the king's village or estate King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kokomo | | Unisex | Hebrew |
| Krypton | | Unisex | Hebrew |
| Lama | | Male | |
| Lane | narrow road | Male | English |
| Langley | Residence Name | Male | English |
| Lara | citadel | Female | Russian |
| Lava | Moulton Earth | Unisex | English |