| Name | Meaning | Gender | Origin |
|---|
| Jock | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Scottish |
| Jodie | From Judith - Admired and praised | Unisex | |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joel | God is willing, Jehova is the Lord | Male | Hebrew |
| Joey | Abbreviation of Joseph.
| Male | |
| Joey | Abbreviation of Joseph.
| Male | |
| John | God is merciful | Male | Hebrew |
| Johnny | the Lord is gracious | Male | English |
| Johnson | Son of John
| Male | English |
| Johnston | From John's farm
| Male | |
| Jon | God is gracious; or gift of Jehovah | Male | English |
| Jonas | Dove. Variant of Hebrew Jonah.
| Male | Greek |
| Jonathan | God gives | Male | Hebrew |
| Jones | God Will Bring | Male | Welsh |
| Jordan | The descending river, to flow | Male | Hebrew |
| Jorge | Spanish form of George farmer
| Male | Spanish |
| Jose | Jehovah increases | Male | Spanish |
| Joseph | God will increase | Male | Hebrew |
| Josh | God Saves | Unisex | English |
| Joyce | after James Augustine Aloysius Joyce, Irish writer and poet | Female | Latin |
| JR | | Unisex | Hebrew |
| Jr. | | Unisex | 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 |