| Name | Meaning | Gender | Origin |
|---|
| Ilia | The Lord Is My God | Unisex | Slavic |
| Ingo | Male Leader | Male | Scandinavian |
| J.R. | after the TV character in Dallas | Unisex | |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Javier | Born in January
| Male | Spanish |
| Jayson | Healer. Alternate spelling of Jason.
| Male | |
| Jean-Claude | | Unisex | Hebrew |
| Jeremy | God will uplift, appointed by God | Male | English |
| Jesse | wealthy | Male | Hebrew |
| Jim | supplanter | Male | English |
| John | God is merciful | Male | Hebrew |
| Jonathan | God gives | Male | Hebrew |
| Joseph | God will increase | Male | Hebrew |
| Kane | tribute, warrior; the doubly-accomplished, golden; man, the eastern sky; beautiful | Male | Celtic |
| Kelli | From The Wood | Unisex | Welsh |
| Kerry | dark, dark-haired | Male | Irish |
| Kiko | | Unisex | |
| Kip | From The Pointed Hill | Unisex | English |
| Kyle | A place-name referring to the narrows: a wood or a church.
| Male | Scottish |
| Lance | knight's attendant; land | Male | English |
| Langley | Residence Name | Male | English |
| Lee | Healer
| Male | English |