| Name | Meaning | Gender | Origin |
|---|
| Ginko | | Male | Hebrew |
| Ginni | Pure, Virgin | Unisex | English |
| Giolladhe | Golden
| Male | |
| Gizmo | A mechanical device or gadget. | Unisex | |
| Glacier | A huge mass of ice moving slowly. | Male | |
| Grisha | Vigilant, Watchful | Unisex | Russian |
| Hairy | | Unisex | Hebrew |
| Harry | estate ruler | Male | English |
| Harry | estate ruler | Male | English |
| Hitchcock | | Unisex | Hebrew |
| Horus | Egyptian god | Male | Egyptian |
| Igor | Scottish variation of Welsh Ifor, lord or English form of Scandinavian Ifar, yew | Male | Russian |
| Ilya | the Lord is my God | Male | Russian |
| Ivan | Form of John | Male | Russian |
| Jadzia | Princess | Unisex | Polish |
| Jarrett | Irish variation of Gerard, spear strength | Male | English |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Javier | Born in January
| Male | Spanish |
| Jax | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Modern |
| Jayce | Moon | Male | English |
| Kasha | | Unisex | Hebrew |
| Kojak | | Male | Hebrew |
| Koshka | Russian for kitten | Unisex | |