| Name | Meaning | Gender | Origin | 
|---|
| Irving | handsome, fair | Male | Scottish | 
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English | 
| Jack | From John - God's gracious gift | Male | English | 
| Jacob | The supplanter, held by the heel | Male | Hebrew | 
| Jadelyn |  | Unisex | Hebrew | 
| Jake | From Jacob - To fill the place of another | Male | Hebrew | 
| James | From Jacob - To fill the place of another, supplanter. | Male | English | 
| Jeff | pledge of peace | Male | English | 
| Joe | Abbreviation of Joseph.
 | Male | English | 
| Joe | Abbreviation of Joseph.
 | Male | English | 
| John | God is merciful | Male | Hebrew | 
| Jonathan | God gives | Male | Hebrew | 
| Jonathon | gift of Jehovah | Male | Spelling | 
| Jordan | The descending river, to flow | Male | Hebrew | 
| Josh | God Saves | Unisex | English | 
| Joshua | God is salvation
 | Male | Hebrew | 
| Kaelyn | meadow | Unisex |  | 
| Kahula |  | Unisex | Hebrew | 
| Kahuna |  | Unisex |  | 
| Kai | Fire
 | Male | Hawaiian | 
| Kala | time, black | Unisex |  | 
| Kalea | bright | Unisex |  | 
| Kana | Powerful | Unisex | Japanese | 
| Kanye | after the rap artist Kanye West | Male | African | 
| Keanu | cool breeze over the mountains | Male | Hawaiian |