| Name | Meaning | Gender | Origin |
|---|
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |
| Jackson | Son of Jack | Male | English |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jefferson | son of Jeffrey | Male | English |
| Jeremiah | Exalted of the Lord
| Male | Hebrew |
| Jerome | sacred name | Male | Greek |
| Joel | God is willing, Jehova is the Lord | Male | Hebrew |
| John | God is merciful | Male | Hebrew |
| Joseph | God will increase | Male | Hebrew |
| Joshua | God is salvation
| Male | Hebrew |
| Jules | youthful; soft, downy | Male | |
| 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 |
| Leonard | lion-hearted | Male | |
| Leonardo | Lion-bold. Leonardo da Vinci is considered by many to be the most brilliant and creative men who ever lived.
| Male | Italian |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Liam | Form of William.
| Male | Irish |
| Lincoln | Capital of Nebraska, USA. Old English: home by the pond | Male | English |
| Louis | famed warrior | Male | |
| Lucas | Form of Luke light: illumination.
| Male | Latin |
| Lucius | Light | Male | Roman |