| Name | Meaning | Gender | Origin |
|---|
| Ivan | Form of John | Male | Russian |
| Ivor | yew | Male | Scottish |
| Jabbar | powerful, mighty | Male | Arabic |
| 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 |
| Jacob | The supplanter, held by the heel | Male | Hebrew |
| Jade | Jewel. Courageous and adoring.
| Female | Spanish |
| Jagger | a teamster | Male | English |
| Jake | From Jacob - To fill the place of another | Male | Hebrew |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jameson | son of James | Male | English |
| Jane | gracious, merciful, God is gracious | Female | English |
| Jarrett | Irish variation of Gerard, spear strength | Male | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jax | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Modern |
| Jay | jaybird | Male | Latin |
| Jayce | Moon | Male | English |
| Jeffrey | pledge of peace | Male | Spelling |
| Jerry | after Jerry Garcia, The Grateful Dead | Male | English |
| Jesse | wealthy | Male | Hebrew |
| Jett | Jet Black Gem | Male | English |