| Name | Meaning | Gender | Origin |
|---|
| Jonathan | God gives | Male | Hebrew |
| Josephine | God will increase | Female | |
| 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 |
| Juliet | youthful | Female | English |
| Justine | just, true | Female | |
| Kit | Nickname for Christopher. Frontiersman Kit Carson.
| Male | English |
| Lana | Attractive | Female | English |
| Lara | citadel | Female | Russian |
| Laura | bay laurel | Female | Latin |
| Lena | Alluring, Temptress, Light | Female | Greek |
| Lennox | amid the lems, from the field of elm trees | Male | Scottish |
| Leona | Like A Lion | Female | French |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Leslie | dweller in the gray castle; small meadow | Female | Scottish |
| Lex | Protector Of Mankind | Male | English |
| Lilith | character in Cheers | Female | Assyrian |
| Lily | Lily
| Female | English |
| Lina | tender | Unisex | |
| Logan | little hollow | Male | Scottish |
| Lois | Battle Maiden | Female | Greek |
| Lola | strong woman | Female | Spanish |
| Lolita | Spanish, lady of sorrows | Female | Spanish |
| Lorna | of Lorne | Female | English |
| Lucille | light | Female | |
| Lucy | light: illumination.
| Female | English |