| Name | Meaning | Gender | Origin |
|---|
| Jane | gracious, merciful, God is gracious | Female | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Jet | A deep black colour. Aircraft engine that propels an aircraft forward by expelling exhaust gases toward the rear. | Male | Mineral |
| Jett | Jet Black Gem | Male | English |
| John | God is merciful | Male | Hebrew |
| Jonathan | God gives | Male | Hebrew |
| Judy | Hebrew, He will be praised, woman from Judea | Female | English |
| Juliet | youthful | Female | English |
| Justice | Just, Fairness | Female | English |
| Kaiden | Fighter | Unisex | American |
| Kane | tribute, warrior; the doubly-accomplished, golden; man, the eastern sky; beautiful | Male | Celtic |
| Khan | An Indian ruler or official | Unisex | |
| Kilo | | Unisex | Hebrew |
| Lance | knight's attendant; land | Male | English |
| Lava | Moulton Earth | Unisex | English |
| Leigh | meadow | Female | English |
| Lewis | Renowned fighter. Form of Louis.
| Male | English |
| Lex | Protector Of Mankind | Male | English |
| Liberty | Free
| Female | Word |
| Lima | Mythical Goddess Of The Threshold | Unisex | Latin |
| Lydia | woman from Persia, beauty | Female | Greek |
| Mack | Son of
| Male | Scottish |
| Maggie | Abbreviation of Margaret. A pearl.
| Female | English |
| Major | Army or Air Force rank above Captain but below Lieutenant Colonel | Male | Latin |
| March | Walk Forth | Male | Latin |