| Name | Meaning | Gender | Origin |
|---|
| Jock | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Scottish |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joel | God is willing, Jehova is the Lord | Male | Hebrew |
| John | God is merciful | Male | Hebrew |
| Johnny | the Lord is gracious | Male | English |
| Johnson | Son of John
| Male | English |
| Jojo | | Female | Hebrew |
| Jon | God is gracious; or gift of Jehovah | Male | English |
| Jonas | Dove. Variant of Hebrew Jonah.
| Male | Greek |
| Jordan | The descending river, to flow | Male | Hebrew |
| Jorge | Spanish form of George farmer
| Male | Spanish |
| Joris | Dutch for George | Unisex | |
| Jose | Jehovah increases | Male | Spanish |
| Josh | God Saves | Unisex | English |
| Joy | From Joyce - Gay and joyful | Female | Word |
| Jules | youthful; soft, downy | Male | |
| Julia | Youthful
| Female | Latin |
| Julie | Youthful: Jove's child. A feminine of Julian.
| Female | |
| Julio | Latin, youthful, downy-bearded | Male | Spanish |
| Julius | after Julius Caesar | Male | Latin |
| Just | | Unisex | Hebrew |
| Justine | just, true | Female | |
| Kara | pure | Female | English |
| Kareem | noble, distinguished | Male | Arabic |