| Name | Meaning | Gender | Origin |
|---|
| 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 |
| Julius | after Julius Caesar | Male | Latin |
| Justin | just, true | Male | Latin |
| Kavan | battle | Male | |
| Keefer | Barrelmaker Variation of Cooper. Surname.
| Male | |
| Keely | Beautiful | Unisex | Irish |
| Keene | Ancient.
| Male | |
| Keiran | Little, Dark | Unisex | Celtic |
| Ken | Male Barbie Doll. | Male | English |
| Kenny | English, born of fire, handsome | Male | English |
| Kevin | handsome | Male | Irish |
| Kiefer | barrel-maker | Male | |
| Kingston | From the king's village or estate King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kyle | A place-name referring to the narrows: a wood or a church.
| Male | Scottish |
| Lance | knight's attendant; land | Male | English |
| Laszlo | after the character in the movie Real Genius | Male | Hungarian |
| Lennox | amid the lems, from the field of elm trees | Male | Scottish |
| Leo | Lion.
| Male | Latin |
| Leon | lion | Male | Greek |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Lestat | | Unisex | Hebrew |
| Levi | United | Male | Hebrew |
| Liam | Form of William.
| Male | Irish |
| Lincoln | Capital of Nebraska, USA. Old English: home by the pond | Male | English |
| Linus | flaxen-haired | Male | Greek |