| Name | Meaning | Gender | Origin |
|---|
| Inca | | Unisex | Hebrew |
| Ira | Watchful | Female | Hebrew |
| Iris | Rainbow | Female | Greek |
| Ivy | Ivy | Female | English |
| Jack | God is gracious | Male | Hebrew |
| Jackson | Jack's son | Male | English |
| Jacob | Supplanter | Male | Hebrew |
| Jada | Precious green stone | Female | English |
| Jagger | Pedlar | Male | English |
| Jake | Supplanted | Male | Hebrew |
| Jason | Healer | Male | Greek |
| Jaws | Bones that form the mouth. A dangerous situation - "The Jaws of Death" | Unisex | English |
| Jaxon | Jack's son | Male | English |
| Jazz | The romantic music | Unisex | English |
| Jenny | White | Female | Cornish |
| Jess | Variant Of Jesse Jehovah Exists. | Unisex | Literary |
| Jezebel | Chaste, unmarried | Female | Hebrew |
| Joshua | God rescues | Male | Hebrew |
| Joy | Joy | Female | English |
| June | The sixth month of the year | Female | English |
| Junior | Younger | Male | English |
| Justice | Righteous | Unisex | Latin |
| Kayden | "Variation Of Kadin, Friend, Companion" | Male | English |
| Kayla | Who is like God? | Female | Hebrew |
| Kelly | War | Female | Gaelic |
| Kent | Uncertain, perhaps coastal region | Male | English |
| Key | Son Of Aidan | Unisex | English |
| Kia | Pet form of Kiana | Female | English |
| King | King's forest clearing | Male | English |
| Kirk | Church | Male | Norse |