| Name | Meaning | Gender | Origin |
|---|
| Jack | From John - God's gracious gift | Male | English |
| Jagger | a teamster | Male | English |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jett | Jet Black Gem | Male | English |
| Joel | God is willing, Jehova is the Lord | Male | Hebrew |
| John | God is merciful | Male | Hebrew |
| Jonas | Dove. Variant of Hebrew Jonah.
| Male | Greek |
| 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 |
| Justus | Just | Male | Roman |
| Kai | Fire
| Male | Hawaiian |
| Keanu | cool breeze over the mountains | Male | Hawaiian |
| Lachlan | From the land of lakes.
| Male | Scottish |
| Langston | Town Of The Giant | Male | English |
| Lazaro | God Is My Helper | Male | Italian |
| Lazarus | God's help | Male | Greek |
| Leander | lion man | Male | Greek |
| Lennox | amid the lems, from the field of elm trees | Male | Scottish |
| Leo | Lion.
| Male | Latin |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Levi | United | Male | Hebrew |
| Lili | Consecrated To God | Unisex | German |
| Linus | flaxen-haired | Male | Greek |