| Name | Meaning | Gender | Origin |
|---|
| Jeanette | French variation of Jean, God is gracious | Female | |
| Jeffrey | pledge of peace | Male | Spelling |
| Jellylorum | | Unisex | Hebrew |
| Jemima | dove | Female | Hebrew |
| Jenesis | Creation or Beginning
| Female | |
| Joaquina | God shall establish
| Female | Spanish |
| 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 |
| Josephine | God will increase | Female | |
| Jovan | Jove-like, majestic | Male | Slavic |
| Julius | after Julius Caesar | Male | Latin |
| Justin | just, true | Male | Latin |
| Kara | pure | Female | English |
| Kareena | Pure, innocent, female friend
| Female | |
| Karen | pure | Female | Danish |
| Karis | Graceful.
| Female | |
| Karsten | Blessed or annointed one. Alternate Spelling: Carsten. Variant of Kristian.
| Male | Spelling |
| Kassandra | Shining On Mankind | Unisex | Greek |
| Kate | Pure | Female | English |
| Katherine | Pure. Used since third century A.D. Early Latin forms Katerina and Caterina became Katharine and Catherine. French Cateline and English Catlyn came into wider use during medieval period when variants multiplied.
| Female | Greek |
| Katina | Pure, Unsullied | Unisex | Greek |
| Keirsten | Variant of Kirsten.
| Female | |
| Khristian | Anointed, follows Christ.
| Male | |