| Name | Meaning | Gender | Origin |
|---|
| Horton | gray settlement | Male | English |
| Howard | guardian of the home, watchman | Male | |
| Howie | Brave Heart, Mind | Unisex | English |
| Ice | Water frozen solid | Unisex | |
| Iginla | | Unisex | Hebrew |
| Ilya | the Lord is my God | Male | Russian |
| Ingrid | Ing's ride | Female | Norse |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |
| Jackson | Son of Jack | Male | English |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jana | Feminine variation of John | Female | Czech |
| Jaromir | Spring, Favor | Unisex | Czechoslovakian |
| Jason | the Lord is salvation | Male | Hebrew |
| Jean | God is gracious | Male | |
| Jenna | white shadow, white wave | Female | English |
| Jennifer | white shadow, white wave | Female | Cornish |
| Jerome | sacred name | Male | Greek |
| Jet | A deep black colour. Aircraft engine that propels an aircraft forward by expelling exhaust gases toward the rear. | Male | Mineral |
| Jimmy | supplanter | Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Johnson | Son of John
| Male | English |
| Jonathan | God gives | Male | Hebrew |
| Kane | tribute, warrior; the doubly-accomplished, golden; man, the eastern sky; beautiful | Male | Celtic |