| Name | Meaning | Gender | Origin |
|---|
| Gator | | Male | Hebrew |
| Gideon | The destroyer; brave spirit. mighty warrior. | Male | Hebrew |
| Gilgamesh | | Unisex | Hebrew |
| Gopher | | Unisex | Hebrew |
| Gorilla | | Male | Hebrew |
| Gus | From Gustave - Staff of the Goths | Male | English |
| Hank | ruler of an estate | Male | English |
| Harrison | Son of Harry Surname.
| Male | English |
| Harvey | as in The Pooka | Male | |
| Hawkeye | Having very keen eyesight. | Male | |
| Hippo | | Unisex | Hebrew |
| Houston | hill town | Male | Scottish |
| Isaac | laughing one | Male | Hebrew |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |
| Jaguar | Large Spotted Feline | Male | English |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jeb | beloved friend | Male | English |
| Jed | the hand | Male | English |
| Jeremiah | Exalted of the Lord
| Male | Hebrew |
| Jesse | wealthy | Male | Hebrew |
| Jim | supplanter | Male | English |