| Name | Meaning | Gender | Origin |
|---|
| Jackson | Son of Jack | Male | English |
| Jacob | The supplanter, held by the heel | Male | Hebrew |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jamie | Feminine of James | Female | Scottish |
| Janet | Variant of Jane | Female | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Jess | Gift | Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Juliet | youthful | Female | English |
| Keiko | Japanese for happy or beloved | Female | Japanese |
| Kirk | church | Male | Norse |
| Kyle | A place-name referring to the narrows: a wood or a church.
| Male | Scottish |
| Lane | narrow road | Male | English |
| Liam | Form of William.
| Male | Irish |
| Lindsay | pool island; linden island | Female | English |
| Liz | Hebrew, pledged to God | Female | English |
| Liza | Diminutive of Elizabeth, Hebrew, pledged to God | Female | English |
| Logan | little hollow | Male | Scottish |
| Louise | Renowned fighter. Feminine of Louis.
| Female | |
| Lucas | Form of Luke light: illumination.
| Male | Latin |
| Lucy | light: illumination.
| Female | English |
| Luke | Light | Male | Greek |
| Lulu | Pet form of the names Louise or Louella.
| Female | English |
| Madeline | woman from Magdala, one who is elevated, a high tower | Female | English |