| Name | Meaning | Gender | Origin |
|---|
| Joe | Abbreviation of Joseph.
| Male | English |
| Joey | Abbreviation of Joseph.
| Male | |
| Joey | Abbreviation of Joseph.
| Male | |
| Jonas | Dove. Variant of Hebrew Jonah.
| Male | Greek |
| Joplin | the afflicted | Male | English |
| Josephine | God will increase | Female | |
| Judy | Hebrew, He will be praised, woman from Judea | Female | English |
| Juice | | Unisex | Hebrew |
| Julia | Youthful
| Female | Latin |
| Julian | Jove's child. Form of Julius and family clan name of several powerful Roman emperors. Biblical Roman centurion Julius saved Paul's life during a hazardous voyage
| Male | English |
| Karen | pure | Female | Danish |
| Kat | pure | Female | English |
| Kathleen | Innocent
| Female | Anglicized |
| Kevin | handsome | Male | Irish |
| Kingston | From the king's village or estate King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kristy | Anointed, Follower Of Christ | Female | English |
| Lance | knight's attendant; land | Male | English |
| Lars | after the Metallica drummer Lars Ulrich | Male | Scandinavian |
| Laura | bay laurel | Female | Latin |
| Layla | night | Female | Arabic |
| Layla | night | Female | Arabic |
| Leah | cow, weary one; glad tidings; mistress, ruler | Female | Hebrew |
| Lee | Healer
| Male | English |
| Lemmy | after Lemmy Kilmister of Motorhead | Unisex | |
| Lennon | small cloak or cape | Male | Irish |