| Name | Meaning | Gender | Origin |
|---|
| Jacqueline | Feminine form of Jacques
| Female | |
| Jane | gracious, merciful, God is gracious | Female | English |
| Janet | Variant of Jane | Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jessica | God's grace | Female | Hebrew |
| Jessie | wealthy | Female | Anglicized |
| Joanna | after the character in The Rescuers Down Under cartoon | Female | English |
| Josefina | God Will Increase | Unisex | Spanish |
| Josephine | God will increase | Female | |
| Josie | From Josephine - She shall add. | Female | English |
| Julep | Rosewater | Unisex | Persian |
| Julia | Youthful
| Female | Latin |
| Julie | Youthful: Jove's child. A feminine of Julian.
| Female | |
| Kate | Pure | Female | English |
| Katelyn | pure | Female | Spelling |
| 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 |
| Kathleen | Innocent
| Female | Anglicized |
| Katie | Variant of Katherine. Pure.
| Female | English |
| Kennedy | misshapen head | Female | Irish |
| Kipling | after Rudyard Kipling, writer | Unisex | |
| Laura | bay laurel | Female | Latin |
| Leah | cow, weary one; glad tidings; mistress, ruler | Female | Hebrew |
| Leigh | meadow | Female | English |
| Lena | Alluring, Temptress, Light | Female | Greek |