| Name | Meaning | Gender | Origin |
|---|
| Joe | Abbreviation of Joseph.
| Male | English |
| Joey | Abbreviation of Joseph.
| Male | |
| Joey | Abbreviation of Joseph.
| Male | |
| John | God is merciful | Male | Hebrew |
| Jonathan | God gives | Male | Hebrew |
| Jordan | The descending river, to flow | Male | Hebrew |
| Jose | Jehovah increases | Male | Spanish |
| Joseph | God will increase | Male | Hebrew |
| 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 |
| Killian | church | Male | Irish |
| Kit | Nickname for Christopher. Frontiersman Kit Carson.
| Male | English |
| Lachlan | From the land of lakes.
| Male | Scottish |
| Lamont | Man Of Law | Male | Scottish |
| Lane | narrow road | Male | English |
| Lee | Healer
| Male | English |
| Lennox | amid the lems, from the field of elm trees | Male | Scottish |
| Leo | Lion.
| Male | Latin |
| Levi | United | Male | Hebrew |
| Lewis | Renowned fighter. Form of Louis.
| Male | English |
| Lionel | Cousin of Lancelot
| Male | Latin |
| Logan | little hollow | Male | Scottish |
| Lorenzo | Form of Lawrence. Lorenzo de' Medici was a patron of Michaelangelo and Da Vinci.
| Male | Italian |
| Louis | famed warrior | Male | |
| Lucas | Form of Luke light: illumination.
| Male | Latin |