| Name | Meaning | Gender | Origin |
|---|
| Jasper | Black stone
| Male | Persian |
| Jax | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Modern |
| Jayda | Green Gemstone | Unisex | English |
| Jeb | beloved friend | Male | English |
| Jeremy | God will uplift, appointed by God | Male | English |
| Jim | supplanter | Male | English |
| Jimmy | supplanter | Male | English |
| Jodie | From Judith - Admired and praised | Unisex | |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joey | Abbreviation of Joseph.
| Male | |
| Joey | Abbreviation of Joseph.
| Male | |
| 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 |
| Jonas | Dove. Variant of Hebrew Jonah.
| Male | Greek |
| Joseph | God will increase | Male | Hebrew |
| Joshua | God is salvation
| Male | Hebrew |
| Joy | From Joyce - Gay and joyful | Female | Word |
| Judd | praised | Male | Medieval |
| Julia | Youthful
| Female | Latin |
| Juliet | youthful | Female | English |
| Kade | From the wetlands.
| Male | Spelling |
| Kai | Fire
| Male | Hawaiian |
| Kaiden | Fighter | Unisex | American |
| Kane | tribute, warrior; the doubly-accomplished, golden; man, the eastern sky; beautiful | Male | Celtic |