| Name | Meaning | Gender | Origin |
|---|
| Jackie | God Has Been Gracious: Has Shown Favor. Based On John Or Jacques. Used More For Girls Than Boys. | Female | English |
| Jacoby | Supplanter | Male | Hebrew |
| Jade | Precious green stone | Female | English |
| Jagger | Pedlar | Male | English |
| Jamie | Supplanter | Unisex | Hebrew |
| Jared | To descend, descendant | Male | Hebrew |
| Jazmine | Jasmine | Female | Persian |
| Jela | Father suffered during birth of son | Unisex | African |
| Jennifer | White | Female | Cornish |
| Jenny | White | Female | Cornish |
| Jett | Black gemstone | Male | English |
| Jocasta | Myth Name (A Queen Of Thebes) | Female | Greek |
| Jocelyn | Tribal name of the Gauts | Female | French |
| Joey | He will enlarge | Male | Hebrew |
| Johnny | God is gracious | Male | Hebrew |
| Jordan | Descend | Male | Hebrew |
| Julia | Down-bearded youth | Female | Latin |
| Juliet | Down-bearded youth | Female | Latin |
| Kat | Pure | Female | Greek |
| Kate | Pure | Female | Greek |
| Kaycee | Modern Kacie And Variants Are Phonetic Forms Of The Initials K.C. Or Variants Of The Irish Name Casey Alert: Vigorous. | Unisex | English |
| Kellie | War | Female | Gaelic |
| Kevin | Beautiful at birth | Male | Gaelic |
| Kimberly | Variable prefix + forest clearing | Unisex | English |
| Lee | Clearing, meadow | Female | English |
| Lena | The bright one | Female | Greek |
| Lennon | Descendant of Leannán or Lonán | Male | Gaelic |
| Leon | Lion | Male | Latin |
| Lexi | Defending men | Female | Greek |
| Lillian | My God is a vow | Female | Hebrew |