| Name | Meaning | Gender | Origin |
|---|
| Jackson | Son of Jack | Male | English |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jarvis | driver, a conqueror | Male | English |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jefferson | son of Jeffrey | Male | English |
| Jerico | City of the moon. Variant of Hebrew Jericho.
| Male | |
| Jesse | wealthy | Male | Hebrew |
| Jesse James | | Unisex | Hebrew |
| Jimmy | supplanter | Male | English |
| Jock | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Scottish |
| John | God is merciful | Male | Hebrew |
| Jonah | Dove. In the bible Jonah was on board a ship God caused to sink: sailors traditionally use the name Jonah to personify someone who brings bad luck.
| Male | Hebrew |
| Jones | God Will Bring | Male | Welsh |
| Jordan | The descending river, to flow | Male | Hebrew |
| Julius | after Julius Caesar | Male | Latin |
| Kerouac | | Male | Hebrew |
| King | King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kirby | church settlement | Male | Norse |
| Lee | Healer
| Male | English |
| Leonardo | Lion-bold. Leonardo da Vinci is considered by many to be the most brilliant and creative men who ever lived.
| Male | Italian |
| Lex | Protector Of Mankind | Male | English |
| Lincoln | Capital of Nebraska, USA. Old English: home by the pond | Male | English |
| Louis | famed warrior | Male | |