| Name | Meaning | Gender | Origin |
|---|
| Icarus | Follower | Male | Latin |
| Ignatius | fiery | Male | Latin |
| Jacqueleen | | Unisex | |
| Jacques | supplanter | Male | |
| Jason | the Lord is salvation | Male | Hebrew |
| Javan | Son of Japtheth
| Male | Hebrew |
| Javier | Born in January
| Male | Spanish |
| Jay | jaybird | Male | Latin |
| Jayson | Healer. Alternate spelling of Jason.
| Male | |
| Jazmine | Jasmine | Unisex | English |
| Jeffrey | pledge of peace | Male | Spelling |
| Jellylorum | | Unisex | Hebrew |
| Jock | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Scottish |
| Johnnie | Modern feminine of John and Jon.
| Male | English |
| Jordy | Flow, Descend | Unisex | English |
| Jose | Jehovah increases | Male | Spanish |
| Jovan | Jove-like, majestic | Male | Slavic |
| Julius | after Julius Caesar | Male | Latin |
| Justin | just, true | Male | Latin |
| Karsten | Blessed or annointed one. Alternate Spelling: Carsten. Variant of Kristian.
| Male | Spelling |
| Kassandra | Shining On Mankind | Unisex | Greek |
| Katina | Pure, Unsullied | Unisex | Greek |
| Khristian | Anointed, follows Christ.
| Male | |
| Kristopher | Greek and Latin, bearer of Christ | Male | Greek |
| Lacy | Derived from Lacey which is a French Nobleman's surname brought to British Isles after Norman conquest.
| Male | |