| Name | Meaning | Gender | Origin |
|---|
| Jacob | The supplanter, held by the heel | Male | Hebrew |
| Jake | From Jacob - To fill the place of another | Male | Hebrew |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Jedda | | Male | Hebrew |
| Jeff | pledge of peace | Male | English |
| Jesse | wealthy | Male | Hebrew |
| John | God is merciful | Male | Hebrew |
| Jonathan | God gives | Male | Hebrew |
| Jones | God Will Bring | Male | Welsh |
| Jordan | The descending river, to flow | Male | Hebrew |
| Josh | God Saves | Unisex | English |
| Joshua | God is salvation
| Male | 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 |
| Julio | Latin, youthful, downy-bearded | Male | Spanish |
| Julius | after Julius Caesar | Male | Latin |
| Justin | just, true | Male | Latin |
| Kai | Fire
| Male | Hawaiian |
| Keanu | cool breeze over the mountains | Male | Hawaiian |
| Kite | | Unisex | Hebrew |
| Kyle | A place-name referring to the narrows: a wood or a church.
| Male | Scottish |
| Laker | | Unisex | Hebrew |
| Leaf | | Male | |
| Leo | Lion.
| Male | Latin |
| Leonard | lion-hearted | Male | |